Hello
Well it certainly doesn’t work for me, and my hosting guys spotted the error as emanating from Yoast directly it identified the “unregistered url parameter”, which I assume to be the query “?nonce=”. I expect though, that since my Yoast installation has various elements of the schema configured, it behaves differently to just activating it?
I do not have any IP blocking.
Peter
Oh! Thank you very much. That solved it.
The style is located here:
Where can we find?
dynamic_avia/avia-merged-styles
Hello,
On my side:

Have you managed to fix this?
Hello,
I refreshed Permalinks, so they are working now. Please check and let me know.
Could you elaborate? When you are logged-in, Action User saves email and full name of the current logged-in user when submitting a new event.
We are glad your issue is resolved, if you have any further questions or concerns please create a new ticket.
I updated again to 4.8.2. and executed your instructions. The problem reappeared and persisted. For the moment I stick to 4.8.2 so you can see for yourself.
You can take a look at wp-admin of my website if you like.
site: https://utrechtsevespers.nl/wp-admin/
user: vespersadmin
password: dYwbah-3hoqjo-guxvox
We are sorry for the delay. It seems that the issue has been fixed in your other ticket.
With the recent updates, are there any issues that are left? Could you let us know?
We are sorry for the delay.
Now you can change “Custom add to calendar / Download events as ICS URL slug”: