Hi there, a lot of people have been reporting the envelope lives are lost... It may be challenging to restore them. The best advice is to not let them build up and keep using them. So sorry for this :(
If it was an iPhone you were upgrading to, the transfer data feature between iPhone's should keep your boosters... I've upgraded to new phones and kept my boosters using that feature :)
Hi there, it sounds like app is not connecting to the internet. Are you able to try signing out and back into your account within the app to see if that helps? Cheers :)