The app keeps asking you to turn on the device location due to the reason that the Auto Open feature is turned on. If you are not willing to use the Nexx Home app with the Device Location turned on, you can try disabling the "Auto Open" from the app.
In order to disable the auto-open, please follow the below process,
1) Open the app and enable the Device Location on your phone.
2) Tap on the three lines on the Top Left corner of the screen > tap on Device.
3) Tap on the "Gear Icon" > Tap on the "Just Drive" button > Disable the "Auto Open" feature.
4) Save the Just Drive settings by tapping on the "Save" button at the Top Right corner of the screen.
5) Go back and save the Device settings by tapping on the "Save" button at the Top Right corner of the screen.
6) Restart the app.