I have just tried to change the frame rate of my Tentacles by connecting to my Mac which I have just upgraded to High Sierra. The app won’t load. I then went to plan B by using my iPhone but the app won’t see the Tentacle. I’m using the TRS mini jack cables that came with the units.Is this the right cable? i.e. 3 pole. I’ve tried 2 cables and 2 iPhones. I’m at the point of having to roll back my MacBook Pro to Sierra but that is a little desperate to change the frame rate. Help needed urgently and would be much appreciated.