Server won't launch

Pictures: https://imgur.com/a/Y25aR83
Here is the log: https://pastebin.com/kU1YT09V.
I use Multicraft with my host ExtraVM.
SErver won’t launch. Just randomly I got timed out and now this is happening.
BUT I think the server kind of is still running, because it looks like the server is online, and it says my two accounts are still online. But when i join it just says ‘encrypting’ then ‘timed out’

Go to the world folder, and delete the session.lock file

Done, but now it says FAILED TO BIND TO PORT!
02.08 18:35:33 [Server] WARN **** FAILED TO BIND TO PORT!
02.08 18:35:33 [Server] WARN The exception was: io.netty.channel.unix.Errors$NativeIoException: bind(…) failed: Address already in use

Never mind. I will just contact ExtraVM and maybe they can do something about it.