Recently installed your app and I had a Deliveries account registered.
I purchased the permanent pro version and when I tried to login via https://deliveries.orrs.de/sync/,
I got an error "This service is only available to owners of the pro-version!"
So I went back to the app and disconnected my Deliveries account to try to login again (hoping it would re-sync or whatnot), but only to get "Server error. Please try again later!"
So now I can't sync my deliveries, and I don't have access to the pro version.