Joomdle Moodle Wrapper Custom URL error

Hi Antonio, I think this is since we updated to Joomla 6.
When using the Joomdle Moodle Wrapper, Custom URL, the "Custom URL" field now needs to be an absolute URL.

Previously, using a relative URL works but now it throws an error 400 Invalid Moodle wrapper URL.

I cannot replicate this.

In fact, this works fine for me with the relative URL, but not with the full one. Maybe you said it backwards?
I don't get the message you get, I got: The requested URL was not found on this server.

I think it is better to use relative URLs.