The constant screen flicker on the mobile app is caused by it not having permission to access the location setting on the phone, which is required when clocking in and out of shifts. You can fix this by allowing the Brevity app permissions to access the location settings on the phone using the guide below.
Please note that the screenshots below might differ depending on your model and version of operating system.
This can be done within the Settings app.
Then by selecting Apps…
Locate and select the Brevity app from the list..
Next select Permissions…
Finally, ensure the Location permission is enabled for the app…