I have a family license and am attempting to create a new 1P account on a Macbook Pro, on which the app currently resides (because I use it as well in a separate user account). When I attempt this, I am asked for a "sign-in address" and have no record of that.
I took a guess at what it might be and was correct. Now I'm getting a "the Account Key is invalid" error. I copy and pasted the key from my iMac to the Pro, so don't see how that could be. I tried entering it by hand without the dashes, and received the same error.
1Password Version: 6.3.2
Extension Version: (632001)
OS Version: El Cap. 10.11.6
Sync Type: Not Provided