Hi @pradilla, the error looks like Google no longer recognizes your user [email protected] as a member of the organization your n8n OAuth2 client has been created under. So, it might be worth checking this with one of your Google Workspace admins or reach out to Google support for clarification.
Thanks @MutedJam , I found the error. Browser had other gmail user logged in, so when clicked o the sigh in it denied because the credentials did not match with the logged in user
(different user than intended)