I have a similar problem. Every time i installing enpass from my personal account (where i boughth pro version), enpass always suggests me to buy pro version from another (work) account. BUT when i delete my secondary account, after reinstalling enpass i recieve an error while trying unlocking pro version "You have already paid the premium version". And one more popup with this "Error while purchasing Enpass. Responce code 7". So, i have no chanse to use my enpass pro, no matter i have one google account or two.