I have a new Nexus 5X that says "Manual sign in required" because the QR code scanner is not available. I've verified my Google Play Services version is up-to-date (9.0.83), and I've reinstalled 1Password from the play store a couple of times. Hasn't been an issue on my other devices running the same versions of services and 1P (Nexus 6P, Samsung GS7).
I hate that I have to add an empty local vault before I can add my Families account, BTW, but I know that's on the radar. Thank you!
1Password Version: 6.3.2b3
Extension Version: n/a
OS Version: 6.0.1
Sync Type: Families