An error message appears when I try to open the application.

If an error message appears while opening the app that mentions "Location services", "Storage access" or "Bluetooth permission" make sure to check the following:

On Android: 

1. Go to your Settings.
2. Go to Apps.
3. Select CardiacSense.
4. Go to Permissions.
5. Make sure to allow all permissions as those are necessary for the app's link with the watch.

On iOS:

1. Go to Settings
2. Scroll down to CardiacSense
3. Authorize Bluetooth, Local Network, and Bluetooth Data.