Connection with an iPad is not supported.
Our experimental testing shows that Studio 192 can be connected to iPad via Camera Connection Kit for recording/playback in some DAWs.
The Studio 192 is a class compliant device and will appear as an I/O device but without direct UC Surface control even though UC Surface may be running on the same iPad.
To control the Studio 192 on your iPad using UC Surface, the Studio 192 must be connected to a computer. That same computer must be running on same network that the iPad is connected to.
Then Studio 192 will appear in UC Surface.