Quite the sentence to read! Ouf!
Trying to get your account back will always send you in circles.
To recover an account you must have registered, when you created it, and kept up-to-date, a secret question and answer or an alternate email address or phone number. If not, account recovery is impossible.
Also, if there has not been any activity on an account for a period of 12 months, the account is automatically deleted from the server.
E-mail providers take your account's privacy and security very seriously, and we'll only let you reclaim an account if you can prove you're the rightful owner.
When you register for an account, it's up to you to provide the most up-to-date and valid recovery info. Your best option to avoid losing access is to update your recovery info if you get a new phone number or change your alternate email address.
If the Password Helper says my password can't be reset online - If you've tried using the Password Helper and weren't able to get access to your account, other recovery options may not be available. We know it can be frustrating to see the fail page, but in these rare cases, we recommend creating a new Yahoo account.