Cloud accounts · Google Photos
Google Photos appears in the Add Account list, so why doesn't it work?
Short answer: Since Google's 2025 rule change, third-party apps can't read a whole Google Photos library, so it isn't available right now even where the option is visible. Custom credentials don't help; use Google Takeout instead.
Because Google no longer allows third-party apps to read a whole Google Photos library since its 2025 rule change. The sign-in can be refused or the account can't list your library, so Google Photos isn't available right now even where the option is still visible.
Custom sign-in credentials don't get around this — the limit is on Google's side. Use Google Takeout to export your photos instead, as described in moving your library with Takeout.