Android Pale Moon and the forums

Whenever I try to visit the forum from my mobile phone (Android+Pale Moon browser), I get the following message:

Error 403
We're sorry, but we could not fulfill your request for / on this server.
You do not have permission to access this server.
Your technical support key is:
XXXX-XXXX-XXXX-XXXX (I deliberately replaced the numbers with x-es)
You can use this key to fix this problem yourself.
If you are unable to fix the problem yourself, please contact the WEBMASTER and be sure to provide the technical support key shown above.

The thing is that the WEBMASTER e-mail is very strange, with pluses between the words, etc. Probably not valid.
Can you enable forum support for mobile Pale Moon browser, please?

I