Over the last about three weeks, 2 out of ten attempts failed to transfer. Login correct, the main game plays fine on the PC.
However, for the last three days ABSOLUTELY no success in transferring materials. Logoff/Logon in the Miner app does not help, same as all the other "restart" type of tricks I had already tried with the phone.
Please make sure to get in touch with Ubisoft Support for any technical issues so they can investigate.
Thanks
Same issue as everyone else. Both on my old phone and my current phone that I got a couple of weeks ago. Contacted Ubisoft, all they ask is for you to make sure you run the latest version of Android/iOS (I'm running Android 7 Nougat), the latest version of the game (it was discontinued last July, so I think my two-week-old phone is good) play the game on a full battery and ultimately clear the cache (which won't help since the new phone meant the game started out completely clean).
After you try all that and it doesn't help, Ubi can't and won't help you anymore either since development stopped. So now you're stuck with a non-functioning app that was launched not two years ago.
Stay classy, Ubisoft.