Failing to setup Multy X after reset?

I had originally setup my Multy X mesh network. Then had upgraded my phone and now I am unable to see my Multy X network on the app (IPhone X - latest firmware). I tried resetting the unit and went through the configuration and the Wi-Fi shows as setup, however no devices shown in the app and no way to get past the install setup process on the app. What do I do next to resolve this.
how do I hard reset the Multy X devices or even hard reset the Multy X App if that is even possible.