Usually recoverable, sometimes not. Here is the honest version.
If you added and confirmed an email address: your progress is saved to your account on our servers. Email info@finoha.net from that address and we will send you a sign-in link to bring it back.
If you never added an email address: the account existed only in that specific browser on that specific device. Progress is lost if you cleared your browsing data or site storage, used a private/incognito window, switched browsers or devices, or reinstalled the browser or reset the phone.
We are not being unhelpful — there is genuinely nothing connecting that account to you, so we cannot look it up. There is no name, no email, no phone number.
Please do this now if you have not: open Settings → Email, add your address, and confirm it. It takes fifteen seconds and it is the difference between a recoverable account and an unrecoverable one.
If you had an active subscription on the lost account, contact us with the payment details and we will sort out the billing side regardless.