Like others in this forum I have had zero luck connecting more than one iFly device to my Echo UAT. If I connect more than one device the Echo UAT will eventually drop the connection. Based on what device you are using symptons will differ. The iFly 740 will throw a DHCP connection error on the screen. An IOS device will just stop displaying traffic. The group I fly with has seen similiar issues with Stratux.
I contacted Uavionix and was provided a wifi firmware update to apply. I applied and tested the update. It didn't fix the problem. I provided Uavionix with my test results. Uavionix replied with... "I have talked to IFLY and Walter is trying to solve the problem based on your description of the problem. They have seen the problem occasionally and since you did have the latest wifi version, we will have to see what they find."
Anything new from iFly to report?