I'm editing this post because I found the right documentation about user permissions to apps' sources.
Share a canvas app with your organization - Power Apps | Microsoft Docs
The issue that I was having had to do with data being displayed in the canvas maker interfase while logged in with a Sharepoint site owner account, but when the user opened the app, no data displayed, as shown in the screenshot below.
I simply shared the List with the user and it started working after a few minutes:
Hi @mobilismexico ,
If you add a user as a member of SharePoint Site(and assign a appropriate SP group), and he can not access the specific list , please check if the list's permission inheritance is broken.
Please check this link:
Customize permissions for a SharePoint list or library (microsoft.com)
Best Regards,
Bof
Michael E. Gernaey
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