Please make sure you are saving PokerStars tournament summaries and importing them into PokerTracker 4 in addition to the hand histories:PokerStars Configuration Guide - Tournament Summaries
If the wrong type is being detected then please attach a sample of these hand history and tournament summary files to a Support Ticket
. By default PokerTracker 4 moves your auto-imported files to your 'Processed' folder which you can access via the 'File -> Open User Data Folder' option on a Windows machine:Guide: Processed Files
In the meantime for any existing tournaments with incorrect data you can update the information manually
using the Tournament Results window.