Is there a way to log in to the same Pokemon GO account using more than one of the sign in options?
Solution 1:
Just because the username of your Pokemon Trainer Club account is identical to that of your Gmail doesn't mean that they are the same account.
Your Gmail account took the name that is the name of your Trainer Club account but not the Trainer Club's PoGo-related account.
If you were to set up an account on PoGo with your Trainer Club account, you would need to give it a different username in PoGo to your Gmail account (since your Gmail account has reserved that name).
You cannot log into the same account with both your Gmail and Trainer Club - they can only log into separate accounts. You can, however, log into the same Gmail account with Facebook.
Also of note, having multiple accounts is a violation of Niantic's term of service. Using both a Gmail PoGo account and a Trainer Club PoGo account would violate this.
Solution 2:
You should be able to log onto the same account with both PTC and Gmail, if you do it correctly. My children's accounts both are linked in this way - PTC and Gmail - as they were originally PTC accounts, and then added Gmail when this functionality was added (in 2018 I believe).
The issue here though is that I don't believe you can add a PTC login to a Gmail account. This is how my account was set up - as a gmail account - and I am not able to add my PTC account information to it, only Facebook.
So, if you were willing to swap to using the PTC account, you could do the following:
- Link a facebook login to your Google-login-based account
- Unlink Google from that account
- Link that Google account to the PTC-based account
That would allow you to have both Google and PTC-based access to the PTC account. It would mean, however, that any pokemon you caught or any experience you gained etc. would be lost on the originally-google-based account, which it sounds like is your "primary" account.