Can't find my favorite server anymore

I used to play on a server but somehow after a while now it doesn’t appear on my list at all, adding the address manually does not work either it doesn’t display the server’s name nor does it give me a ping
I tried Vpns but it didn’t bring it either and I’m also 110% sure I’m not banned because I talk to the admin and he’s a friend. I really want to be able to Play again

The main ways servers disappear from the server list are:

  1. They are no longer online
  2. They are having hosting problems that stop them from showing
  3. Your server browser filter is set up in a way it does’nt show their type of server - try reset
  4. Your server browser game mode is not set to all

What is the server name?