Boron not setting up when its time to "use this mesh network"

I am following the steps in the tutorial for setting up my Particle Boron, but when I get to the part where I am instructed to click “use this mesh network” it just has a rotating loading bar and goes no further.
I am using my iPhone to connect it and the phone is all up to date and I have followed the video perfectly. Any help would be appreciated!

Unfortunately I have no iOS device to test, but the terminology “use this mesh network” doesn’t seem right for a gateway device.
Usually a Boron would create a network to be used by other devices.

Are you trying to connect the Boron to another mesh network? That wouldn’t work (yet).

It eventually worked but now its stuck trying to connect to the internet via cellular. Its been trying to connect for about an hour now.