Hi,
I'm sorry for the trouble. Since our hosting service is completely free, we have an "inactivity policy" to prevent unused, old accounts from consuming resources on our servers. This policy allows us to continue to provide our free hosting services, and several other hosting companies have similar policies.
If the website owner does not log in for 31 days, the account is suspended until they sign in. If the account remains suspended for a significant period of time, the account is eventually deleted.
Unfortunately, this is what happened to your account, and your account was terminated after prolonged inactivity.
You are free to create a new account, and restore any backups you may have.
Thank you,