Didnt work, and no support response

I bought this for my iPad Pro. The Lite version worked, but the paid version just sits in my Macs menu bar, greyed out and unresponsive.

Ive reinstalled several times, and four requests for tech support over 3 weeks yielded no responses.

It may work if this is figured out, but if theres no support to make that happen, its useless to me. Im about to give up and spend $15 on the competitor, Duet Display, although it requires a lightning connection, not wifi.

Erick the Architect about iDisplay, v3.2.0