iOS shortcut hanging at 'Loading data'

I am seeing some very strange behaviour, I can logon to the HASS gui through safari on my iphone, but when I then create a shortcut on my iphone and try to login through that, it hangs at the ‘Loading data’ screen.
I started using a pi-hole yesterday so not sure if this is related…

UPDATE: turned off the pi-hole and the problem persists

I have the same behaviour. No issues on android, browser on PC or on IOS Safari bit the shortcut like yours hangs at loading data. Home Assistant is running on a windows PC so not Pi related.

Did you find a solution?

No solution. Have been using the iOS app successfully instead.

Same issue here. On iphone 7+ and ipad 4, ios 10.3.3.