It doesn't seem like others are having this issue.
Try joining the server from an alternate IP, they are
-na.nethergames.org (North America)
-play.nethergames.org (Connects you to the best available region)
If this doesn't work try;
-restarting your game or device
-turning off and on your Wi-Fi or mobile data
-turning off any VPNs or proxies
-Connecting to a different Wi-Fi or mobile network
-disconnecting from any public WiFi networks
-Disabling any 5G connections
If none of the above work, check back in about 30 minutes to see if the issue fixes itself.
If you are still experiencing the issue after you have tried all of the above please head over to the #bugs channel on our discord server (https://discord.gg/ng)