lemon7002 Try turning off all hacks and re-enabling them one by one until you find the one that's being detected.
If you are still frozen with everything disabled, try joining with vanilla Minecraft to confirm that it's actually an anticheat and not a broken server that's simply freezing everyone.
Some other things to try:
- If only vanilla Minecraft works, the server could be detecting Fabric and treating that as a cheat. Try turning on VanillaSpoof.
- If the server shows any kind of captcha in chat and doesn't let you complete it, try turning off NoChatReports.
- Make sure your Wurst installation is up to date. Versions older than 7.51.2 were vulnerable to a resource pack detection exploit.
- NoFall and Freecam are known to be detectable in Wurst 7.51.x. This will be fixed in v7.52. For now just turn those off if they freeze you.