This was the quickest refund for me. I uploaded 4 videos and selected the 1st preset, but the output previewed just one of those in between a lot of absolutely random stock footage. I tried one more time by unticking the B-roll option. This time, I did get all the videos in the output. But it just seemed that I would have to put as much time into perfecting it as I would if I were manually using something like Filmora on my smartphone.

PS - I was mildly frustrated when I could not locate the preview fullscreen option.