Yes it’s very odd. I changed the COM port for the midihub to COM6 (the next available one according to the list) but that did not work, I could not connect again. So I changed it back and changed the com port of the Bkuetooth device to 6 instead and that has worked, so does Bluetooth with my headphones, so hopefully that has fixed it all!
Sorry for all the inconvenience I’ve caused but at least messing/looking at these settings caused me to notice that issue.
I can’t praise your support enough and will highly recomend the hub to others 
Thanks again
Jason