Hello,
We have had multiple reports of people having issues with Swisscom and with downloading from our store, could you confirm which provider you use? This can also be done in a private message if you are not comfortable with sharing it publicly ofcourse! As a temporary fix you could also try using a VPN to see if this solves the issue, this has worked for the other people who experienced this issue!
Apologies for the inconvenience.Cheers,Bart