Got OTG cable, etc,etc works only as midi controller
Working for me with a Nexus 7 (2013) and Android 5.1.1 (and updated firmware on the Wego3, which I don’t know if it was needed).
Which device and which djay version do you use? Please let us know, so we can better assist you.
Samsung S4 GT i9500 , android 5.0.1 , Djay version 2.1