If you see the message below after downloading openning GapZap, follow the instructions below.

Step 1

1. Go to device Setting

Step 1

2. General

Step 2

3. Device Management

Step 3

4. DADU ICE CREAM INC

Step 4

5. Trust "DADU ICECREAM INC"

Step 5

Go back to Home screen and launch GapZap. The app should now open with no issues.