If your cPanel username matches your forum name (ezepkina), I'm showing it was erased on 12-17-2015 after remaining in a suspended state for 27 days; unfortunately I haven't been able to identify if it was an inactivity suspension or not, but once suspended for 21 days the account becomes eligible for termination, which looks to be what has happened here.
You're more than welcome to sign up again, however with the old account having been terminated we wouldn't have the files/databases that were on it originally. If you have backups you should be able to restore from them.