Can't login to existing account due to Google login mistake

Account: info@technoexpert.tech - locked out of both dashboard and API.

Ž While linking identity providers, the account entered a state where browser sign-in demands a Google identity that does not exist. Signing in with email/password in a clean incognito session redirects to Google and fails with:
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–Ž Unable to authorize access: must authenticate with technoexpert-png Google account (got )
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–Ž technoexpert-png is my GitHub username, not a Google account — there is no Google account by that name, so this is unsatisfiable.
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Ž The same misconfiguration appears to break the API. flyctl auth whoami, orgs list, and tokens create all succeed, but every Machines/apps call fails with a missing third-party discharge:
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Ž verify: invalid token: all tokens missing third-party discharge tokens;
Ž no verified tokens; token 69f17f45-…: missing third-party discharge token
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Ž A freshly minted org token returns 401 Unauthorized instead. I believe the macaroon carries a Google-provider caveat that cannot be discharged.
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Ž Please unlink the Google identity provider from this account.
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Ž Request IDs: 01M2P9EMRH5W1S45KBS15ECJG7-sjc, 01M2NT0FVDMYKJR7TARGXBS1KW-sjc, 01M2NS5ZNAER2T1JTV0MS07NH2-sjcŽ

flyctl v0.4.104, macOS arm64. Payment method on file.

I have removed the Google SSO requirement from this account (the usual identity verification requirement is skipped as it’s impossible for technoexpert-png to be a valid domain).

fwiw, we do plan to add checks so it is impossible to set up an invalid SSO requirement, but it’s backlogged…

Thank you Lillian.