Found this tread while doing a Google search. I am having the exact same issue. Trying to use a RPi to drive a computer monitor for IamResponding in 2 of our fire stations. And like the other two users, I can't get past either the browser type selection (mobile or desktop) or the login screen to run this as a fully automated kiosk.
Since it has been a few months from the last update, have any of you had any success in getting your RPi to auto log into IamResponding? I have also found their tech support to be both condescending and downright not helpful so I'm pretty sure I know what will happen when I go that direction. Would love to hear any updates on this forum.