Is it possible to change the source spreadsheet of an app?

I’ve created a new topic for this here

but to answer your question, I’ve added “NEW” to the title of the new one so it looks different.

old short url:

old custom url:

new short url:
new custom url:
since i couldnt get to point to the new app, i’m trying, and still no luck

tried incognito mode and different devices and ISP and it’s strange why this still persists