Bluetooth Headphones not recognized in RB Export Mode

Hi guys, 

I just got a new computer and am setting up my RB, everything is going smoothly except that the Rekordbox Software in Export Mode is not recognizing my bluetooth headphones. 

Actually it appears on the list of devices

"Casque (WH-CH510)" 

But then when I click on it it tells me "No Audio device found" 

I'm sure it's something stupid but I haven't been able to find it, and couldn't find a matching thread. 

Cheers