For a long time, server recovery was carried out; this was a resource-intensive operation to clean the file system, which became a weak link at a time when the server still had to serve the website and forum (the website and forum frequently displayed 502 and 504 errors).
On April 10, the work on cleaning the file system was completed; about 8 million files were deleted, and now the server resources are freed up for normal operation. Also, there was a transition to more advanced software, providing greater protection against the problem that had to be faced.
At the moment, frequent errors (502 and 504) should stop, and the forum should function relatively normally.
If something stops working or works incorrectly, please write in a private message.