Be sure you are in MC version 1.12.2 or 1.15.2. We are slowly migrating to 1.15. Servers in the newer version are Creative, Easy Survival, and Hard Survival. If you want to play there, please join in the 1.15.2. I confirmed that you are added to the whitelist. Please let us know here if you are still having trouble. Otherwise, we'll see you in-game!