For some reason they did good job in Waltz and Tango, however FOXTROT session, kind of lost Foxtrot flavor due to bent knee first instead of relax first. They will be great future start if continuing to practice like this.
The best dances are the waltzes, the worst, including (hopeless) music, is the foxtrot. Foxtrot can be improved next time, but it is absolutely a condition that precise foxtrot music is played (the best music is always instrumental only, but if singing, a thorough study of foxtrot singing in other great events in the world must be undertaken). Music is the door to dance, even very top level dance.
This couple is nice but have much improvement in technique to do yet. The Foxtrot music is a nice song but would have to be the worst piece of foxtrot music I have ever heard played in any competition anywhere. It shows a distinct lack of understanding of the foxtrot dance or you would not play this rubbish.