Hello,
Please follow the instructions in this documentation to activate debug in your site to see any PHP errors recorded that can provide insight on to whats going on. Please reply with a link to debug.log file. If you are not able to do this please send us FTP access to your site so we can do this for you.
Hello,
Could you send us a screenshot? On my side:

Switching the theme fixes the issue. I also checked functions.php and you have some customer code there:

Could you try commenting each custom line one by one to figure out which one causes this?
Hello,
Thank you for your messages, I am going to assign this ticket to Ashan and he will be able to take it from here and find you a solution. Please allow some time for him to get back to you, we greatly appreciate your patience and thank you for being a eventon customer! Also please disable any IP blocking on your site if there are any.
It’s not the advanced settings because the staging is using ‘Default WordPress Filter’
Ashan,
The same on dev2:
https://dev2.myeventon.com/test-1031/
Hello,
Thank you for your messages, I am going to assign this ticket to Ashan and he will be able to take it from here and find you a solution. Please allow some time for him to get back to you, we greatly appreciate your patience and thank you for being a eventon customer! Also please disable any IP blocking on your site if there are any.
I have a staging site running which is currently having this issue https://t.somptingvillagemorris.org.uk/calendar/
Seems to be working on our side:

Could you please manually clear your cache?
Perfect! Do you need our help with anything else or can I close the ticket?