Known Issues

An updated list of high-priority bugs we're actively trying to squash with keyboards.

The issues reported below are ones we’ve identified as significant, high-priority issues that we are currently investigating. Please note that this is not a complete list of every single known issue.

🕓 Last Updated: 12 August 2020

Table of contents

Invalid redirect error when connecting to Zoom API

Fixed in Virtual Events


  • When connecting a new site with the Zoom API, users are hitting to the following error:
    Invalid redirect: https://{your-site}/wp-admin/?state=zoom|oauth|authorize|{key}(4,700)
  • Users hitting this error are unable to connect to the API or create Zoom meetings from the event admin. However, users who already have a connection to the Zoom API can continue to use it as normal.
  • This issue is related to a change on Zoom’s side. They are aware of the issue. Many other developers are running into this issue- it is not specific to Virtual Events.

Affected plugins:

  • Virtual Events (new installs only)


  • Create a Zoom meeting in your Zoom account, then add the meeting link to the Video Source URL field in Virtual Events.

Internal ref: VE-179

Date and Time block always starts with UTC

Fixed in The Events Calendar 5.1.5


  • When creating a new event with the block editor then regardless of any setting, the time zone of the Event Date and Time Block settings will always be UTC

Affected plugins:

  • The Events Calendar

Internal ref: TEC-3543

Conflict with Ninja Forms

Fixed in The Events Calendar 5.1.5


  • When having both The Events Calendar and Ninja Forms active and you are editing a Ninja form, then the Ninja form editing interface is missing some styling.

Affected plugins:

  • The Events Calendar 5.1.4 and above
  • Possibly Event Tickets 4.12.1 and above


  • Download, install, and activate this helper plugin until the fix is released
  • Alternatively: downgrade to The Events Calendar 5.1.3

Internal ref: TEC-3537

Site appears disconnected from Zoom and doesn’t allow to re-enter credentials

Fixed in Virtual Events 1.0.2


After updating to Virtual Events 1.0.1, in some cases it is not possible to update the Zoom API info on the site.

  • The Client ID field is disable.
  • The Client Secret field is hidden.
  • The “Connect to Zoom” button is disabled.


  • Download, install and activate this plugin and then deactivate and delete it. Upon activation it will obliterate the Zoom data from the VE setup.
  • Alternatively: manually delete the tribe_events_calendar_options row from the wp_options table in the WordPress database.

Affected plugins:

  • The Events Calendar: Virtual Events 1.0.1

Internal ref: VE-149

“Event Description is required” error with Community Events

Fixed in Community Events 4.7.2


  • In Community Events when using the WYSIWYG editor (Events > Settings > Community tab > Use visual editor for event descriptions) the “Event Description is required” error message appears on submission, even if the field is filled out.
  • Clicking on ‘Submit Event’ a second time will submit the event without error messages.


  • Click on the ‘Submit Event’ button a second time.

Affected plugins:

  • Community Events 4.6.7+

Internal ref: CE-64

Marking organizer field as required in Community Events is not working

Fixed in Community Events 4.7.2


We have an article in our knowledgebase where we provide a snippet to mark certain fields on the Community Event submission form as required. Currently marking the organizer field as required will not have any affect. This will be fixed in the next release.

Affected plugins:

  • Community Events 4.7.1

Internal ref: CE-63

Additional Fields do not save or update properly when using the Block Editor

Fixed in Events Calendar Pro 5.1.2


  • When the Block Editor is enabled an Additional Field block can be added to the Event when using Events Calendar Pro. However, this will not be saved, the block always remains blank.

Affected Plugins:

  • The Events Calendar 5.0.2+
  • Events Calendar Pro 5.0.2+

Internal ref: ECP-354

Your update failed due to an incompatibility …

Note: Info


When running an update on the calendar / ticketing plugins the update might fail and you might receive a message like this:

Your update failed due to an incompatibility between the version (5.1.0) of the The Events Calendar you tried to update to and the version of The Events Calendar PRO that you are using. Read More.

This is a feature implemented in our plugins. If you are using several of our plugins, then during the update process it will be checked whether the versions you want to and can update to are compatible with each other or not.

For example your Events Calendar Pro license has expired last month. A new release for The Events Calendar and Events Calendar Pro just came out and you would like to update. However, you cannot update Events Calendar Pro – due to the expired license – and updating The Events Calendar would cause an incompatibility and might crash your site. The system recognizes this and will not allow the update of The Events Calendar to keep your calendar working and you will be presented the above message.

The solution:

  • Make sure that you have access to the needed versions of all the plugins.

Plus/Minus button styling glitch with Event Tickets / Plus

Note: info

Description: In Event Tickets v4.11 we have redesigned how the Ticket Form looks on the front-end. With some themes there can be a styling conflict of the plus/minus buttons in the ticket form. (Screenshot)

Affected Plugins:

Possible workaround:

  • Please refer to this article for more information and a possible fix.

Wrong time / time zone is shown for events after WP5.3 update

Note: Info

Description: After updating to WordPress 5.3, the time and / or the time zone of the events is wrong. In most cases the time is shown in the UTC time zone.

This is caused by the date_default_timezone_set function, which should not be used any more. See the ‘Not recommended’ section in this post.

Update: As of Events Calendar PRO 4.7.10 we are no longer using the date_default_timezone_set function.

Solution: If you are still experiencing glitches with the time or time zone of the events, please read this post for further information and a solution.

QR code scanner does not recognize API key

Note: Info

Description: When scanning a valid QR code of a ticket, an error message similar to the below appears on the screen:

  • “Please Verify API Key is Correctly Entered on the Settings Page”

In some cases the server configuration is not allowing the URL (that is coming from the QR code) to go through properly. The URL should be returning a JSON response, but it instead looks to be redirecting to a HTML page. Please contact your hosting provider to investigate this.

In case server configuration is right and confirmed by the hosting provider, then create a support ticket with the following information:

  • Set up a test event in the future and share the URL
  • Set up a ticket for the event that our support team can ‘purchase’ for free, so we can receive a QR code to scan
  • Share with us the API key for the app

To find out more about the error messages in the Event Tickets Plus App please check out this post.

Affected Plugins: Event Tickets Plus & Event Tickets Plus App

Event Tickets Plus: ticket stock troubleshooting

Note: Reading

Description: We have received reports of ticket stock not decreasing with the ticket sales. If you are experiencing this, then please read the below article first before getting in touch with us. Thank you!

Affected Products: Event Tickets Plus

Internal ref.: n/a

Daylight Saving Time Issues with Recurring Events

Note: Reading

Description: Daylight Saving Time can confuse the best of us. If your recurring events appear to be offset by an hour and you’re note sure why, check out these knowledgebase articles to learn how your events may have been affected.

We are also aware of glitches that can happen when the Series Engine plugin is active. If you are using this plugin, please note that they have settings you can take advantage of to resolve this problem.

Affected Products: Events Calendar PRO

Internal ref.: n/a