I have an iPod Touch 6th Generation (Model A1574) running 11.3.1. The Morph’s Bluetooth doesn’t show up at all, either in Settings or in any app’s Bluetooth MIDI controls. It works fine for my iPad 6 Gen running the same OS.
The usb connection works fine.
I realize this may be an incompatibility of Apple’s, but perhaps you know something about it. I do actually want to use it with the Morph via Bluetooth