Short answer

An Invalid App Code error will be displayed on Arrow even if you enter the correct app code if the time on your device is not in sync.

To sync the time on your device, follow these steps:

On Windows

Click on Settings.

Click on Time & Language.

Toggle the Set the time automatically button.

Click on Sync now.

On Android

Go to Settings.

Tap on Date & time.

Tap on Network provided time.

On iOS

Go to Settings.

Tap on General.

Tap on Date & Time.

Toggle the Set Automatically button.