Universal Link was working fine on iOS 12 but I ran into issues when I updated to iOS 13.1 yesterday. URLs that\'s supposed to open the app when tapped are just opening up in th
Try to open Settings > Safari > Request Desktop Website > All websites > Switch Off.
This issue occurs more often on iPads, since it makes more sense to show desktop websites on big screens rather than on small ones.
From apple developer forums.
It resolved my problem, great