traffix123 it works fine for me... Please, try accessing your site either in incognito, with cleared browser cache or another browser - your browser might've cached the old domain settings that didn't work
UntrustableRus they're bot accounts that have registered an account at our main forum, which we copy the database from when creating a new forum. It is a known issue which (I think) was fixed on the old server, but it looks like the fix didn't carry over to the new one. I'll patch it later today. Meanwhile, as for now, it is completely safe to just destroy them.
Edit: these accounts are not the ones that were removed, they're new and they were created after the fix. I guess it would make sense to either make our skeleton forum private or completely restrict public access, so things like this don't happen. Thank you for bringing this to my attention!