The latest CS:GO update requires SourceMod to be updated.
Unfortunately, the developers of SourceMod have not yet managed to implement the necessary fixes, and the servers are therefore down until the update is ready.
The servers will continue to crash and restart until the update is in place.
There is a server running at game2.uber1337.dk:27016 with a minimal SourceMod installation; it does not appear to crash and can be used until the other servers are back online.
However, it lacks skins and all the other extras, as, as mentioned, these cause the servers to crash until SourceMod has released an update.
Automatically translated from Danish (DeepL).