Hi all, I've experienced the same thing with Godox TT685II F and my Fuji X-T20. Verify that the sound for flash and camera is On and for me the problem was that the flash didn't made perfect contact when mounted on the hot shoe, I had to push it a little bit further to make contact and then it finally connected properly, showing me the TTL options also in camera. It appeared it was mounted correctly but when I looked from below, the last metal pin from the flash was a little visible, a sign that it didn't made contact properly. Hope it helps someone 🍀