3 different Xenons cannot join a new mesh network

I have 3 Xenons that belonged to an old mesh network. I am trying to add them to a different mesh network.

On all 3 Xenons, I can successfully pair with my iPhone. That is where the trouble begins. After this step, the Xenon keeps disconnecting from the PC’s USB port and then reconnecting … I never get to the usual screen that asks which mesh network to join.

Are all 3 Xenons bricked? Is there a way around this?

Thanks in advance.

I used this page and now it is working: