Below steps instruct what to do if you are registered in the “UEFA Mobile Tickets” app and would like to adjust your subscription preferences:
Open the “UEFA Mobile Tickets” app (iOS / Android)
Click on the burger menu on the top left corner
Select “My personal details”
Remove the checks in the boxes below and click on "Save"
Important: please note that the preferences indicated by you in the “UEFA Mobile Tickets” app do not apply to the Communication Preferences in your UEFA.com account, that can be adjusted here.