I have hit a road block with my dedicated server. Everything was working fine pre 153.2 patch. i updated the server and my friends are no longer able to connect. i can connect using my local ip but not using the external ip. friends can no longer connect . i have re opened the ports, even disabled my firewall. using https://geekstrom.de/valheim/check/ shows that my ports are open and the server is up. However whenever we try to connect it turns into a black screen with connecting logo and then back to the main menu with a "failed to connect". looking at my valheim logs i noticed this come up during the connecting phase :

[Info : Unity Log] 05/14/2021 15:14:32: Got status changed msg k_ESteamNetworkingConnectionState_ProblemDetectedLocally
[Info : Unity Log] 05/14/2021 15:14:32: Got problem 5003:Timed out attempting to connect

I have run out of ideas as to what is the issue. Anyone experienced something similar to this? i have even released and renewed my ip. checked the integrity of both server and mod. and removed all mods aswell. I cant think of anything else that could be causing this...