It appears that you had tons of dropouts in your signal connection. Among the worst cases we have seen. This is a screenshot from your Flight Synch data under the Map Pilot heading on Maps Made Easy.
Black lines are bad and mean that there was basically no signal. No triggering will occur when there is no signal.
There are a couple of reasons this might happen.
One, is that it sounds like you may have had another drone related app open at the time which can cause big connectivity issues.
Two, is that you have to be able to maintain a solid RC connection to trigger the camera unless you are using Connectionless mapping mode which should be used in cases where the RC signal cannot be maintained reliably.