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

[Sina_Meraji]

I’ve created a new topic for this here

Custom short and long URLs still pointing to old app after creating a new app and deleting the old

I have a Google Sheet that is currently getting lots of visits since previously we shared the sheets link publicly. I first built a Glide app on top of it, but I realised we don’t want the google sheet to be public anymore. So since I couldn’t directly change the data source on the glide app and phase out the public google sheet, I built a new app backed by my new sheet, and transferred pro subscription from the old app to the new. My old app was available at a custom short URL (https://interns…

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

old short url:

Tech Internships Malaysia

old custom url:
https://internships.umapp.club/

new short url:
https://internshipsmy.glideapp.io/
new custom url:
since i couldnt get https://internships.umapp.club/ to point to the new app, i’m trying https://internship.umapp.club/, and still no luck

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