Tap & Pay

[cyngate]

Hi, currently i have problem to initiate my application which is related to tap & pay settings.
below are some of the things that i tried.
Uninstall all app that would appear in tap and pay list, my app will work
One item in the tap & pay list, it would not work
Add my app into the tap & pay list but it would still not initiate my app.
May i know how to make it work if it appears in tap and pay list?
is it due to aid conflicts?

Thanks a regards