First watch and follow the Control X Series DSP with XTouchApp tutorial.
If you are experiencing problems controlling the DSP,
first make sure that the X Series DSP has the latest Firmware version.
If the problem persists, exit the Xilica Designer software. Then restart the XTouchApp on your device. The device should now be responsive.
As X Series processors can only support 1 connection to the device, this connection may be used by Xilica Designer; so the XTouchApp device may not be able to connect. Restarting the application should solve the problem.
Please note that there are limitations for X Series in Xilica Designer. Some features are not available.