Itunes 12 remote button missing

The questions about the remote button being missing started with version 11 in 2012 and the thread continues until 2014. None of the suggestions in those threads seem to work with version 12.

I used to use the Remote app to control Itunes on my computer, but no longer am able to. When I try to set it up, I get the four digit code to enter into Itunes by clicking the Remote icon in the upper left of Itunes, but there is no icon there.

Itunes connects successfully to my Apple TV and Denon Receiver. My phone also connects successfully to both them as well as to Itunes via the Music app although it takes a long time to download the 20,000+ tracks each time I use that.

Remote was a much simpler tool for controlling my computer.

How can the remote button be restored to Itunes 12?