App apk not working on my android phone with version 8

i downloaded my app apk it does work in my android phone samsun galaxy a51 version 11 but it does not work in my other phone name moto g6 version 8 it show me a erro messege " iapp keep stopping"

Hello @salmannawaz1724xjqj0
Thank you for sharing all this information. It appears that the issue may be due to the fact that your device and Android version are out of date. Could you please try to use the Thunkable Live App?