When connecting the iConnectMIDI4+ to my iPad, I can't hear the audio through the iPad speakers or headphone jack.
By default when connecting an iOS device to the iConnectMIDI4+, the iOS device's sound is passed to the iConnectMIDI4+ which disables that iOS device's internal speakers and headphone jack.
To change this, open the iConfig application, and under the Audio Info section, de-select iOS for the iCM4+ USB Device Jack and then perform a Commit & Reset.