SSL 2+

I have a MacBook pro 13" 2017 model and it did work at the beginning. Now after a resart it stopped working at the second day, showing input while nothing plugged in and no output. Rebooting, replugging interface etc, nothing works and driver can't be reinstalled (plug and play for mac). Probably a manufacturing error but I am sending it back and won't order again, my faith in this interface is long gone.
My current interface DualPre is 1/3th of the price and works even better driver wise. I found new appreciating for the smooth working interface I already had. So thanks for that SSL2+.