I presume you were trying to join the SMP server, which is currently limited access. You should be able to access the creative server without any problems though.
User login
Server status
mc.redstone-server.info (Creative+RS) - Up! Running 1.17-1.20.4 Realtime status check
I used The wrong IP im verry sorry everyone. :(
I presume you were trying to join the SMP server, which is currently limited access. You should be able to access the creative server without any problems though.