The problem with mobile devices is that they have two different layers of security that could cause this. First, there is the link between the mobile device and the nearest WiFi hot spot. Second, from there, if you are trying to get to AWF, we are set up for HTTPS and that is a second level of security. It is hard to diagnose that because either place could be the culprit. Technically, you are bridging a network (the local wireless network) to another network (the one that interfaces to the wireless device.) Without having a way to see the device logs for both the mobile device and the Hot Spot device, that question might not be answerable.