track delay not working when using Melodyne plug-in

I hope this is an easy question about Cubase Elements 7 with Melodyne Essentials plug-in on PC. I am using the track delay control in the inspector for an audio track. If I am using Melodyne plug-in, it appears that the delay is no longer working - I set the delay to a value and the track is not played back delayed. If I remove the Melodyne plug-in from the track, the track delay works. Any direction on why the delay isn’t working when using Melodyne would be appreciated!