Symptoms

When an iOS application is launched, a request appears to track user's activity with available options "Allow" or "Ask App Not to Track".

Cause

The activity tracking request occurs during launch all of the installed iOS apps after updating to iOS version 14.5. It is possible to continue use of all the features of the app, regardless of whether the user allows the app to track the activity. It is possible to change the setting at any time in the device's settings under Privacy > Tracking.

Additional information

Detailed information is available on the official Apple website in the article: If an app asks to track your activity.