Multy X WSQ50 will not connect to app

I am writing to request assistance with two Zyxel Multy X (WSQ50) devices and mini X purchased in 2020 that are experiencing critical functionality issues and unable to connect to the app.

When I perform a factory reset on a Multy X unit and proceed through the initial setup wizard, I am able to create a Wi-Fi network and the device appears to function as a router temporarily. However, the setup process ultimately fails with a "Settings Error" message so does not connect the primary unit. As I am unable to use the app can you send me a firmware update on a usb please as I see other people have requested this too in other posts. I have attached screen saves.