I tried FLVS flex for a summer forensics course an...

I tried FLVS flex for a summer forensics course and was extremely disappointed. I was told I needed to make progress each week and on my first week I submitted an assignment but forgot to do a part of the questions. I immediately tried to cancel or edit the assignment submission upon realizing this and couldn't find anything (You can't!). I then messaged my teacher and she gave me an F. The next week, I went to do my week's progress and found that I was withdrawn for not making progress! I was told I had to have it by the end of the week, they never said by Friday. And how is it FLEX if you can't work on weekends? Will not re-try, highly discourage using