A subdomain forum isn't working

[TheSnake]

Hello! A few years ago we added a subdomain forum for a new community and we're using SMF as well. These days it just stopped. The main forum is working well, but this new on the subdomain isn't. We still can see some of the files like:
the "robots" http://pickup-bg.seo-forum-seo-luntan.com/robots.txt or the favicon http://pickup-bg.seo-forum-seo-luntan.com/favicon.ico and some other files like txt files, but the SMF (forum) isn't showing at all on http://pickup-bg.seo-forum-seo-luntan.com. We have access to the cPanel and we'd like to get some ideas what to fix.

[TheSnake]

repair_settings.php solved the problem! Thanks!