Does it work if you only play on one Speed table? If you open multiple Speed tables iPoker use the same table number which means that the PokerTracker 4 HUD can only attach to one of them but if it's not working for you on a single table then please restart PokerTracker 4 using the logging enabled link on your Start Menu, reproduce this problem and then report it in a
Support Ticket with your log file so we can investigate that for you. You can access the log file by clicking 'File --> Show User Data Folder' in the main PokerTracker 4 window and the file we need is the text file called 'PokerTracker4' or 'PokerTracker4.log' that is in that folder.