Lots of times trackers will have an amount of time that passes before they won't allow you access to your account any longer. Most will ask you to join the IRC and you can explain what/why it happened and they will either try to authenticate your account and grant access or decide to keep you banned. I have done the same over the many years with a few trackers as I fell in and out of love with torrents.

Best of luck to you on reacquiring your accounts as I know what it feels like to have all that time invested and let it slip only to lose it. I know it can be tough to maintain login times with all the different trackers and hoops to jump through.

Take care.