Folder Connect provides a Test button which shows the file(s) found in a target folder.
Go to Company card, Connect Settings, Folder and choose a connection and click Test.
This test shows one XML file found called PO_12345.xml followed by its size (1963).
If you are checking on an error or delay be sure to Cancel to avoid changes to settings. If Test does not show an error it is connecting and the cause may have resolved itself.