Make and Model are irrelevant, at least for connecting. In the context of MatterControl, a successful serial connection requires only the correct serial port and baud rate to be selected; everything else in the MatterControl profile is specific to the printer's attributes for printing. That said, connecting should be pretty easy, assuming that the printer and tablet are functioning normally. Do you have another host (like a computer, running MatterControl or another printer control software) that you can test the connection with, to isolate the printer or the Touch as the problem?