Connection Issues: WARP is not working with Mojang auth. Servers

I cannot connect to any Minecraft server with WARP turned on. With only, it works, but this is not what I want. Any other VPN works fine and completely without a VPN, too. Can someone please help or give any information on why this error (disconnect message) appears when I try to join with WARP turned on? Last week, it worked, but not anymore.
PS: Maybe it’s a bit strange, but I also need privacy on Minecraft servers.

Error (disconnect message)

Failed to connect to the server

Failed to log in: The authentication servers are currently not reachable. Please try again.

Error Screenshot