Upgraded the PowerApp to version 2.0.540 and now any app local or MS Sample apps will not load and displays a "Didn't Install" error message. It says that "This PowerApp didn't open. Make sure you're signed in and you have Internet access".
I've logged out and logged back in. I do have internet access. The same app and version on my iPhone works fine. The same apps I have problems with in the iPad Pro, I can open on my phone.
One thing that I did notice is that when I open the App Details on the iPad, the Conntection to SharePoint is in search/connect mode (floating dots) while on the iPhone it shows me signed in to SharePoint with my email address.