Please check that you have configured PokerTracker 4 to import WPN tournament summary files as well as the hand history files:
WPN Configuration GuideIf you have tournament summaries configured and you still don't get buy-ins recorded for future tournaments please
compress some of your hand history and tournament summary files and attach them to a
Support Ticket so that we can see if there is enough information available to update the tournament detection rules for these tournaments. In the meantime for any tournaments with incorrect data you can update the information manually in PokerTracker 4 using the Tournament Results window:
Guide: Updating Tournament Information Manually