Is vjay for iPad/iPhone supported on AirPlay?

Yes, the application is supported.

However, when used in combination with the DDJ-WeGO2, the audio output is changed to the AirPlay device side, so the sound is not output from the DDJ-WeGO2. (Only the microphone audio is output from the DDJ-WeGO2’s master output.)

For details on "vjay for iPad/iPhone" of, see the Algoriddim website.