Common problems

Correction of incorrect display of Russian or others characters

https://serverfault.com/a/894545

You need to execute for all screens or execute in the root and then recreate the screens

Premium features not working for players

Check the verification_server file in the server root to see if it matches the one on github. Or contact the developer

Server does not start

Try to start server using ./clear_start.sh or luajit start.lua and check output