I am troubleshooting an existing App that is running well a year ago but not working recently.
On App.OnStart, it runs:
ClearCollect(AdminCollection, 'AppAdmin');
'AppAdmin' is a datasource which is pointing to a SharePoint online list.
In App studio, I clicked on "File" -> "Collection" the AdminCollection is listing the first 5 rows correctly.
However, when test with monitor tool, on AppStart it returns "Success" result with info = "0 rows collected."
In fact, there is no item in AdminCollection. What could be the cause of problem? I am using a user that is able to edit the sharepoint list 'AppAdmin'.