Created a BS3 recipe with all of the events occurring on 5 minute intervals as a test vehicle. Crashes my tablet at every event, never posts a Notification.
Discovered the same functional problems using my GS8+, so it's not my tablet. Maybe Brad doesn't like Samsung?

Tried uninstalling BS3 and installing fresh from Play, no joy, same problems.
Checked the permissions for BS3 and turned everything on, still fubar.
Last resort: I had a backup APK for the last BS2 Mobile release, so I uninstalled BS3 and installed BS2.
Et voila! BS2 Mobile will load recipes I create using BS3 on my peecee, and posts Notifications at every instance perfectly.
So I have a brew day work-around until this problem is hopefully addressed...
Cheers!