That account has been deleted, it seems, which would go a long way towards explaining why you can't log into it. I noticed you mentioned logging into cPanel; the only thing that counts as "activity" on a hosting account is logging into the single sign-on portal at
https://x10hosting.com/sso/login/ - and you're required to do that at least once every 30 days. If you miss out, your account will be suspended, but you have 21 days where you can log in and unsuspend yourself. After that, it will be terminated/deleted.
It is possible that notifications were sent and that you never received them. They may have been routed to your spam folder, or (depending on the mail service provider) they may have been silently discarded. I'm afraid that the x10Hosting servers don't get a lot of love in the wild (although since user accounts are no longer allowed to use the x10hosting.com domain, and haven't been allowed to do so for quite a long time now, there is no longer a legitimate reason for any service provider or third-party spam filter to filter or discard mail from that domain).