So I accidently added SSO (Google), is there a way to remove this?
You can simply hit disable under Auth. If you have accounts which were fully managed I dont believe we currently provide an automated recovery process, but an admin (e.g. us on sentry.io, or yourself on on-premise) can disable that flag on accounts (managed=False).
If you can’t login and do it yourself you’ll need to email support@sentry.io to verify your identity.
On Self-hosted version, I have an admin user but now I have enabled Google SSO. How can I login with my admin username and password?