You might want to get a hightend security as well as the AntiCheat plugin. There are communitys full of hackers. I know how to make hacks, I use this knowledge to block them! So if you ever need a plugin to help with this just PMC me!

You have already been told what to do by Palaeos.

Bump

PM me the specific message it gives and the IP you claim to be banned on.

Omgggg i meant planet minecraft lolol im ip banned from this website thanks for trying amd all but no i cant come on the website through wifi only data on my phone

goofyguber7This has been happening to othets too lately im ip banned but did nothing and my server is still up please help!

Wait is it your server? Because judging by your statement you said "but did nothing" meaning you didn't break any rules, in which case it can't be your server, but you said "my server" so another possibility can mean you said "but did nothing" as in did not do /ipban.
So which one is it?

Also, make sure ur server is prenium

Get more security!

someone hacked your server. Go into your ban file, and delete ur name. I suggest you stop your server first