I agree with JonWayne. I also have iCloud set up on all my devices. When I try to save on my ipad, it says it has been queued to save to iCloud. I am connected to the internet but no matter how long I leave it when I try to load the save file on my iphone, it tells me there is no saved file.
The longest I played in consecutive days was around 17 days I think. After about a week, all I got was 3 rage potions every day which continued until day 17 when I stopped. Are there better rewards the longer you play or does it continues with just rage potions?