How accurately the tournament type can be detected depends on how much information is available. Not many sites write a lot of detailed information about tournaments.
If you attach the hand history and tournament summary files for one of your tournaments that does not detect correctly to a
Support Ticket we can take a look for you and see if there is enough information to improve the detection.
By default the original hand history files will have been moved to the Processed folder, which you can access via File > Open User Data Folder in the PT4 menu.