You can now join the Minehut Lobby using Minecraft versions dating back to 1.4.7. By default, servers will only accept the latest version of Minecraft; to add legacy version support, install the Protocol Support plugin.
We can join on 1.8-1.12 but can't join servers :((
Just make it on every server
if someone joined with a 1.8 client what will happen to 1.9 command blocks