I've noticed that when I edit a post/topic and then try and post a reply in the thread without reloading the page first I get an error (Contact Admin). If I reload the page I can successfully post without issue.
Could you please leave an example URL to allow us to check it?
I just had this on the forum here when logging in. I failed the captcha and tried again and it gave me this error:
Error 2252 | Please contact to forum admin.
On my site I tested it again on this thread:
I've checked the error logs and there are none from this issue. Hope this helps. 🙂
Please read this support topic:
I'm not sure what the issue is that you're highlighting. Initially this looks like it's a http/https error, but since my settings are all set to https, is the script pulling a http request somehow?