I have a Sonny Bravia 55 class A8J OLED 4K UHD Smart Android tv - XBR55A8H. I did connect it successfully to a new Roku streambar pro, it worked long enough for me to set up the Roku site, wifi and all. The bar disconnected itself a few minutes later, I re-attached everything, but no luck, it won't come back. Didn't have any luck connecting the remote either. What am I missing? Thanks so much