I've got an Excel step in my Power Automate Flow which accesses an Excel file on SharePoint and gets a row. I've changed the connection to use a service account so I don't have to grant everyone access to this document. However, when I call this flow within my PowerApp, it is still running as the user logged onto the PowerApp and consequently failing because they don't have access to the file.
Should this work? When the PowerApp starts they get asked to provide permissions to the Excel connector.