SelectHub Content Writer interview questions

You have to do an unpaid skills test before getting an interview. It's not too long, and seemed easy enough. After I completed it I got a video interview, so I assume that meant my skills test was adequate. I felt like I nailed the interview and had experience in almost every question they asked about my abilities. I have a 4 year marketing degree and a year of previous copywriting experience. I still didn't get the job. Not sure what went wrong in the video interview.