I think its something to do with notification settings on Android. Can't get the bounties for Xbox from my Galaxy but can from an old iphone.
Update - Now works on Android. To fix it I:
(1) Logged out of the app.
(2) Force quit it.
(3) Went to Android settings and deleted cache and app data.
(4) Allowed notifications for the app and background updates.
(5) Opened the companion App again.
(6) Allowed cache up to 500MB in the app.
(7) Logged back in.