Fuse Preview on public wifi

Hello, I am trying to get a Preview going on my iPhone while at a Starbucks. Both devices (Mac & iPhone) are connected to the public Starbucks wifi. My phone keeps saying ‘Failed to connect’. Any tips would be appreciated!

Also the app works locally in Fuse and on Xcode’s local iOS simulator.

It’s not enough to just be connected to the same wifi, but the wifi needs to allow communications between the devices. Public wifi-points normally disables this to reduce the risk of intruders.