Rsa 720 problem optical fiber

My rose 130 does not recognize my burmester 113 dac when it is connected with the optical fiber an rsa 720 hub instead with the supplied usb 3 cable it recognizes it immediately how can I solve the problem??

It’s an old problem, which is primarily related to normal audio logic vs hifi rose logic. You have to select USB 2.0 output from the application, even when connecting via fiber optic to RSA720, instead of USB 3.0 Fiber.
If it still doesn’t work, it means that it’s a compatibility issue with RSA720 and you should ask the moderator for firmware for RSA720.