Technical help board

Check the FAQ first for existing answers before posting new Questions

If you have any technical question about the plugin or configuration of plugin or if you found some issue, please describe it here. Please, inform inside of message your version of WordPress, PHP, Booking Calendar. Also sometimes is needed list of used plugins inside of system and name of your WordPress theme.

7,139 thoughts on “Support

  1. HI

    I’m getting this failure everywhere on my website and in the wordpress admin, it disappears when I deactivate the booking calendar plugin

    Warning: Missing argument 2 for wpdb::prepare(), called in /customers/3/0/b/ on line 392 and defined in /customers/3/0/b/ on line 1147 Warning: Missing argument 2 for wpdb::prepare(), called in /customers/3/0/b/ on line 1379 and defined in /customers/3/0/b/ on line 1147 Warning: Missing argument 2 for wpdb::prepare(), called in /customers/3/0/b/ on line 1379 and defined in /customers/3/0/b/ on line 1147

    I have no idea what it means, but it is probably something i’ve caused myself, I beleive I can get rid of it, by deleting the plugin and reinstalling it, but I have the paid personel booking calendar, and i’m not in possesion of the original file anymore.

    Will I loose the paid version if i temporarily delete it? If i do, how can i get it back without paying again?

    Best regards

    • Hello.
      If you are not receiving any emails about new bookings in your system, then please recheck all points from this troubleshooting instruction:

      Please recheck with support of Hosting company that your server have no any restrictions about the sending of the emails. Sometimes the server providers is set limits for the number of sending email during specific period of time.

      Please deactivate one by one your active plugins and recheck if its help or not. If its not help, please try to deactivate the actual them and activate the default wordpress theme. Need to find the reason of that issue.

      Kind regards.

  2. With reference to your FAQ’s you say that “The check in/out days in calendar will be marked as half booked (diagonal line)” but I don’t get a diagonal line, just a slightly cut off day, but it’s not so clear as a diagonal line would be? Am I doing something wrong?

    Also when I hover over the first day it comes up with a tooltip of ” …. – 10:00″ (followed by the cost) which isn’t very clear.

    Many thanks for any help, Lindsay

    • Hello.
      Since version 5.0 update in the booking calendar instead of the diagonal lines showing the vertical lines for the “change-over” days. We are showing the vertical lines instead of the diagonal, because since that version we are having fully responsive calendar. It’s mean that you can define the any size of calendar or calendar can be adapted for the specific mobile device screen. And that’s why it’s almost do not possible to use the diagonal lines (triangles) for the different sizes. We was making decision to use those vertical lines, which possible to use for the different sizes of calendar.

      In the mouse over tooltip showing the cost of the day (which possible to deactivate to show) and the time of check in/out for specific date.
      Thank you for understanding.

      • Thank you for the information. Is there anyway we can have the words ‘Check In 10:00′ or Check Out 16:00 in the tool tip. as the ellipsis (…) is not very descriptive? Many thanks, Lindsay

        • Hello.
          Firstly please note, that you can add the text (which will show above the times in mouse over tooltip) on the General Booking Settings page in Calendar section for the option “Title of booked timeslot(s)” (available since update 5.1).

          If you need to have more detail description: ” ‘Check In 10:00′ or Check Out 16:00 in the tool tip”, then you need to make the customization.
          Please open this file ../booking/inc/js/biz_s.js

          then find this code:

                 if (s == 2) {if (tooltip_time == '') tooltip_time = '    ...    - ';}      // End time and before was no dates so its start from start of date

          and replace it to this code:

                 if (s == 2) {if (tooltip_time == '') {tooltip_time += 'Check out: ';  tooltip_time += '    ...    - ';} }     // End time and before was no dates so its start from start of date
                 else tooltip_time += 'Check in: ';
  3. I have the medium business version and want to be able to set different days to check in on different calendars.  So some the change over date may be a Friday and others a Saturday.
    I’ve selected Range days in booking settings and then the select a Dynamic Range with 2 mouse clicks, and for any day of the week.
    I add this [booking type=2 form_type='standard' nummonths=1 options='{select-day condition="weekday" for="6" value="7"}']
    I was wanting to see if I clicked on the calendar it would only let me pick 7 days from Saturday but it doesn’t seem to do anything different – I can click anywhere on the calendar and select any number of days? What am I doing wrong.

    • Hello.
      Please send the screenshots of the general booking settings page and edit post page, where you was inserting booking shortcode and link to the page with booking form to this email: support @

  4. Hi there,
    I just stumbled across the free version of your software and like it pretty much already.
    My question for you is if your plugin is capable of doing the function described below on the paid version:
    I need the booking calendar to not show all the request that people make by marking the days in the different colours.
    The system should just accept people selecting i.e. 4 days of a certain month, then fill out the fields for additional informations and send me this in a request email.
    Kind of like a general availability request. i.e. you have x Carpenters to do work. The customer doesn’t have to know if its Steve, John or Max specifically available. Just place a general order to get information if 1 of those has time.
    I don’t need to see those requested days graphically anywhere, just the email with the dates the person requested.
    Best regards,

    • Hello.
      1) If you do not need to show the specific days as booked, in other words set the days in calendar as always available. Then it’s will require a small customization in the code to have this feature.
      2) If you need to that your visitor can select only fixed (or minimum) 4 days in calendar, then you need to check the Business Small or higher version, where you can activate the range days selection mode at the general booking settings page in admin panel.
      3) In any paid version of Booking Calendar you can configure the form fields and email templates at the Booking > Settings page.

      Please retest it in the live demos.

  5. Hello,
    I am a paying customer of your calendar booking software. I am using it on this website here:
    In general I really like how this software works, but I just noticed a problem. Recently I had someone who reserved one of my cabins, but she accidentally reserved two spaces and only paid for one of them. When this happened the space that she reserved that she never paid for was marked as unavailable on my booking calendar so other people couldn’t reserve it.
    How can I make sure that reservations that do not receive payment get removed from the booking calendar?
    Thank you,
    Nathan Brown

    • Hello.
      In the Booking Calendar Business Small and higher versions possible to activate the “auto cancel” functionality in the General Booking Settings page for the “pending bookings, which have no successfully paid status after specific time”.
      Please note, if the you do not approve specific booking, or the paid status will not be changed (you do not use the IPN in Paypal or visitor do not click on “ruturn link” from the payment website), then the booking will be cancel after specific time.

    • Hello.
      Please open this file ../booking/css/admin-booking-listing.css

      then add this code to the bottom of that file:

      .wpdevbk-filters-section .advanced_booking_filter {
         display:block !important;
  6. hi, 
    can you add additional items to the .block_hints div? while there’s “available”, “pending” & “booked” i need to add an additional hint.


    • Hello.
      Unfortunately, such feature does not support in the actual original versions of Booking Calendar.
      If you want to add this labales manually by yourself then you can make it in the file ../booking/lib/wpdev-booking-class.php
      in this function content:

      function get_legend(){

      Please note, if you will modify the source code of the Booking Calendar, we will not guaranteed the correct work of plugin and do not support it.

  7. Hi,
    Can I change the style of display for a particular resource? For example the colour when it’s booked in calendar overview.

    • Hello.
      By default its does not possible to change these colors in the Calendar Overview page, but you can try to make this customization in the ../booking/css/admin.css file.
      Kind Regards.

  8. Hi there,
    I’m really keen on buying the plugin (large business version) for a client.  However there is one requirement of theirs that is missing.  That is the ability to send booking confirmations via SMS, ideally using Twilio.  Is this something on the roadmap?  Or is there a way I can integrate this via another plugin perhaps?
    Many thanks,

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