re-registering username

[YEKOT]

Please can anyone help me. I would like to use fibs again but cann't use my original username & password.
When i try to connect to fibs all i get is access denied. or if i use Telnet i can type username and password three times then i get \" connection to host lost\". or if i use the registation tool it say username in use already being used.

I would be gratefull for any information, so that i can use fibs again.