I use an ant dongle for all the trainer connectivity but did once try the BlueTooth connection once but i forget why. what would probably be more useful for them is to have a trace from the ant dongle in addition to the fit file. the fit file will only contain information that the app sees and records. you can try installing WireShark and capturing all data to/from the USB port with the ANT dongle in place. that will then have the data sent to and received by the application. you know, if the application is telling the trainer to ease up on the grade then the trainer will ease up on the grade. the trace will tell them that. i just had a look and it seems that WireShark now can capture BlueTooth data as well. you might want to capture that if that is how you are connecting now until you get the ANT dongle.
just an idea. i have the kicker and this does not happen to me. sorry to hear about it as i know stuff like this can be pretty frustrating.