Well you have to find which account is signed up for Advantage.
You can sign into your TurboTax Advantage account and under Your Product, select to remove product. Once you remove the recurring product order, the TurboTax Advantage subscription will be cancelled, as well.
How to Cancel my Advantage Account
https://ttlc.intuit.com/community/downgrading/help/how-do-i-cancel-my-turbotax-advantage-subscriptio...
After the cancellation deadline, wait until you receive your TurboTax product, then submit an online refund request within 60 days of receipt here, https://support.turbotax.intuit.com/forms/refund-request.jsp
Did you try the Account Recovery tool yourself?
How to view all your accounts
https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/many-intuit-accounts-...
It's common to end up with multiple accounts. First LOG OUT of whatever TurboTax account you're logged into right now. Then use this TurboTax account recovery website to get a list of user ID's for an email address. Run the tool against any email addresses you may have used
https://myturbotax.intuit.com/account-recovery/
