[Question] Why does "This app can't open Check the Windows Store..." appear after file modification?

[iG8R]

Hi.
Thank you a lot, finally I found the answer to the question that has been bothering me for a long time.

Yet, there is another question appear. After some modifications to the application files, I am unable to run this application due to an error appearing with the following text "This app can't open Check the Windows Store for more info about XXX. See in Store". Even after returning the original file back this error doesn't disappear, only reinstallation helps.
Could you please give some advice on how to launch an app with modified files?