Problem joining servers on ARK!

[KingKillerKingKing]

Hello, it's me.
For the past two weeks I've had trouble with the online-feature in ARK. Whenever I load the servers, only a few pops up and they're never the same. One day there can be 12 servers and on the next there can be 4 new replacing the old ones. My friend has also invited me to servers but I cannot join those either. What should I do? I've tried to uninstall and remove all the files, plugged in an Ethernet cable, turned off my firewall and anti-virus, repair ARK in Steam, reinstall Steam and tried several commands in CMD to solve this issue, but none seems to work.
Is there anyone else who has this issue? Or have had it before but fixed it? All tips are welcome and much appreciated.

[brotherRogue]

One thing you haven't mentioned

Port forwarding

Have dun with that, quite sure you will be able to find the info o how to so it, along with a list of verified ports you have to open

You basically want your NAT type to be OPEN