Try these steps
Restart the phone (hold the power button for 3 seconds and tap Restart).
Clear the app’s cache: Settings → Apps & Notifications → See all apps → [the app] → Storage & Cache → Clear Cache.
Open the Kosher Qin Phone app → Updates tab, and update everything, including Google Play Services.
Uninstall the app from the home screen (press and hold the icon), then reinstall it from Apps → All. Don’t press “Remove” in the app store.
Open the app again after the restart and see if it works.
Common causes
The app needs a web browser to sign in. See “An app needs a web browser to sign in.”
The app refuses filtered phones (for example “device rooted” or “compromised”). See “An app says my device is rooted or compromised.”
“Update Google Play Services.” See “I see a message to update Google Play Services.”
The app needs something our filter blocks. Sometimes we can fix this on our side. Contact us with the details below.
The app isn’t compatible. Apps added by request that aren’t in our catalog have never been tested on the phone, and we can’t guarantee they’ll work or can be fixed.
Notifications late or missing?
Go to Settings → Apps & Notifications → See all apps → [the app] → Battery optimization → Not optimized, and make sure notifications are allowed for the app.
Still need help?
Contact us through the support chat in the Kosher Qin Phone app or by email at [email protected]. Please include:
Your serial number (Settings → About → Model & Hardware → Serial Number)
The app name and the exact error
When it started
A short screen recording (swipe down from the top and tap the Screen Record tile)
What you already tried