None of these tricks worked for me, so here’s how I fixed it (with some additional steps specific to me).
- To avoid having someone read my emails if I ever forget to sign out, I created a new Gmail account, but this isn’t strictly necessary. It did help with a next step.
- I invited my new account via family sharing so it can access YouTube TV
- After signing into my Gmail account on a different device, search for « Google less secure app ». By default, this will be turned off. Turn that on.
- In my Tesla browser, I tried signing into my account and it worked.