Ran into this with USPS.com, which doesn't give you the private key for their TOTP, and would only work with Google/Microsoft Authenticator. I can't even export QR code out of Google Authenticator to get it into Proton Pass/Auth.
Since Proton Pass/Auth isn't handling those protocol URLs either on Android, it wasn't one of the options from the TOTP "mobile" link on the website.
Importing it into 1Password didn't work either and resulted in the QR code being read as a URL in the form of:
otpauth-migration://offline?data=SOMEURLENCODEDDATA
Unfortunately that string isn't a valid code, and was Base32 (Not 64???) encoded... I had Gemini decode it and it actually worked.
Yeah, so.... mayb
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