Display app gets killed and doesn't start automatically after working hours.
Problem:
The Display app gets killed during the store's non-working hours. Display app cannot automatically start and the campaign does not resume playing during working hours.
Solution:
Enable the below settings on the device to achieve optimal operation of the SmartCircle Display app.
- Go to Settings and go to About phone
 - Tap MIUI version rapidly until it says "You are now a developer!" If it says "No need, you're already a developer" you can move onto the next step already.
 - Go to Additional settings > Developer options
 - Tap 3 times on Reset to default values to show a hidden setting
 - Scroll down to the very bottom and turn off MIUI Optimization