I am currently using an iPad connected to a ESI M8U ex MIDI hub via USB MIDI which in turn is connected to my keyboards via 5 pin midi cables and program changes etc work perfectly.
I recently purched a CME WiDi master to connect iPad to MIDI hub via bluetooth but program changes are not being sent.
Is SLM able to send program changes via bluetooth or must it be via USB MIDI?
MIDI over Bluetooth should be fine. Did you already click the MIDI icon in the top toolbar and click "Connect to a Bluetooth Device" to connect to the Widi Master? If so, please submit a help ticket:
https://helpdesk.arlomedia.com/arlomedia
Arlo, thanks for getting back so fast. I will try that later on.