Steps to enable instant apps.
Please follow the instructions to enable instant apps
- Navigate to your phone’s Settings menu.
- Scroll down and tap Google under the Personal category.
- Under the Services category, select Instant Apps.
- Tap the toggle on the top-right of the screen.
- Read through the instructions card, then tap Yes, I’m in.
If you want to check more about instant apps please read this article, where you can find how to run instant apps.