The idea of the app is awesome! But I tried to use it in order to make a backup of my cellphone (Android 9) and it doesn't work. I always get the message "couldn't backup, try again later". I looked on the internet and many people also have the same problem. I have tried everything to solve it, I have cleared the cache memory of the app, removed the screen lock protection, and rebooted the cellphone. It simply doesn't work.