I have customized a PowerApp from a SP list. The issue that i am seeing is I enter information as shown in the screenshot below and then SAVE it:

A new item is created in my SP list but the value for the fields Salesforce Account ID, Salesforce Opportunity ID and Opportunity Title do not make it into the list as shown below:

Furthermore, when i click on the line item in SP, the form doesn't open up in the view form view and it renders as this:
