No, as a custom installer I use my own name and pw to log in to the builder at [https://builder.oncontrols.com/manager.html]. I understand that there is a different address for individual users, something like [https://builder.iruleathome.com/iRule.html]. That is probably the one that wants Google authorization.Thanks! I won`t pretend knowing a lot about this, but you need a google account to log in to iRule builder? Back when I got the iRule license I signed up for a google account that I only have used for iRule. I use this email-address and password for logging in to iRule builder, and in the app for syncing.
To sync the individual handsets you cannot use the "manager" account but use instead the name and pw you created for your handset. I had not heard that Google+ access had ended -- the relevant support page still recommends it.