I purchased the premium addition and must have been logged in with a different email which Todoist did not recognize. I logged in again with a Gmail account and it is not the premium one which I just purchased. How can I find out what my log in information is for the premium account. Name
Try using the 'Forgot Password' option, as it will ask you for your email account. Trying entering one of the email accounts you think you used. You may have to reset your password in the process (make it something simple), after loggin in, check to see if your Premium Account is active under one of the emails.
As a side note. I have a dedicated gmail account I used just for android app accounts which simplfies what your incountering.