Hi Tobias, thanks for the reply.
We haven’t been able to resolve it yet. The users get the err_timed_out error, but it’s only received on their mobile carriers. I’ve asked them to let me know what carriers they are on, as the problem seems to be specifically for US users and it appears that they all seem to be on the same one. What I think has happened is our forums IP address is being blocked by their carrier for whatever reason and they cannot connect.
Still doing some further testing to confirm if other users with the same carrier are able to access it, to determine if it is actually that or an unusual per-user problem we’re going to try to fix. I’ll update when I know more though.
Thanks again.