I get cannot use Mine-ID? when using the registration command?
This can be 2 options.
Either mine-ID is down (you can check that by visiting https://mineid.mine-net.eu)
Or you do not use a Java account and mojang cannot verify you as java player.
To solve this log into a java server with your java account and try again
What are the requirements for a valid website?
Please visit and read the Non Used Sites Guide
How do i get Support?
Please join our discord server and make a topic in mcg-plugins ()