coderunder not connecting after timers update

hi, I’m connected to a university network and about a month ago i had the same problem.

i asked and was told that back endless uses a non-standard port and i should ask the network
admin to open that port for me.
i did and they did and it worked, but after the timers issue got fixed codeRunner couldn’t connect again.
did you change ports or anything like that? what should i do?