Is the HUD layout locked? Click the PT-icon and select 'Unlock Layout' and you should be able to move the HUD around on the table. You can also move the HUD when the layout is locked by holding the CTRL key while dragging the HUD. If that's not the problem make sure everything is running as administrator otherwise please turn on 'Enable Logging' in PokerTracker 4 via 'Configure -> Options' and then restart PokerTracker 4. Next reproduce this issue you've described and then attach your support bundle to a
Support Ticket. The support bundle is created via the 'File -> Create Support Bundle' menu option in PokerTracker 4:
Tutorial: Reporting A Problem