@sylvain73 sorry if it has been unclear. iOS we add pretty much all who register. For Android I’ve added maybe 1/3 now and have notices the issue with the emails we have, so I’m trying to fix that by modifying the registration form to state about the email attached to users Google Play account.
If we add emails that are not used in Google Play you may join but are not able to install too easily. Have to see if we can get rid of the Google group stuff when this beta is changed to open beta. The Google Group seems to be really confusing to a lot of users and makes the installation of the app complicated.
So copying those Google Play emails from the replies (>80 and counting) now and adding more people to the Group soon.