»I Can't Login!

I used to play on this server a long time ago. I just found it again and it was asking me to register but whenever I try to do so, it just says that I can't have anymore than 3 accounts on the same ip. Whenever I try to unregister, it say /register password confirmpassword
What do I do?
Any command other than /register is not working. It just responds with /register pass pass.

 

To unregister an account, you first need to log-in to it; the only thing you can do when first connecting is to login or register if your current username isn't registered. This means that your current username isn't the same as your old one.

Since you played on this server a long time ago, you might be able to login using your old user-name. If you can't remember that, look in your logs directory in .minecraft (google it if you can't find it) and see if you can find your old username there.

 

Thank You sooo much! I remember the staff on the server being amazing aswell

 

Admin lock