Creating masked email issues

Tonight I wanted to sign up for two new services, TopCashBack and ExpressVPN. On neither of these websites did 1Password for Windows 8.12.22 (81222017) ask me if I wanted to create a mask email. I had to stop twice and go to Fastmail WebUI login and create a mask email myself. This getting frustrating in that this is not the first time that this has happened. On prior occasions I just used my regular email because I could not be bothered to go through this procedure. 

There is no easy way of creating a masked email in 1Password and it has been requested numerous times, apparently.