Anyone having trouble since the 5.0 update, use the 4.7.1 file...
- download the apk file
- allow or give it permission
- install it
You can verify that it's me, crrdlx, the person who made the app, by cross-referencing my credentials at https://keybase.io/crrdlx or https://keybase.pub/crrdlx/ (this same apk file is also located there).