What is your iPhone model? We’ve done numerous tests with this setup and it should work. Does your phone show there is a device connected?
The app is still running when you are updating. You actually need to reboot, because this is the only way to ensure all parts of the system that got updated, got reloaded. Otherwise, you some parts of software might become incompatible, which is undesired at best.
Today I have had troubles connecting to my iphone hotspot and yesterday it connected rightaway.
I am using an Iphone 5s with ios 11…1
I did finally get connected to my phone hotspot today by deleting my home router off the reach.
Using fing I do not see any devices from the iphone.
If I use fing on my Ipad which is also connected to the iphone hotspot I get a list of the devices.
Also if I use your Reach App on the iphone it gives me the address of the reach module while in hotspot mode.