Mildly useful, but no support and lingerie ads

My Take

Likes:
-I find it helpful in laying out and organizing grades, doing math for me, calculating averages, etc.
Dislikes:
-boring interface (I wish it had colours indicating how a student did on an assignment (red for fail, yellow for average, green for amazing)
-you can't have different grade category percentages for different classes
-My larger concern is that I show the grades to students and 2 days ago there was an ad on the side for lingerie and underwear. I had a teen boy with me and I had to quickly change tabs. I refreshed it, and the ad went away but then came back 5 minutes later.
-There is no way to talk to a real person and get support. Everything is directed to an email, which doesn't respond. They have a paid version to set up whole schools but there is no support for the free version.
-It seems the whole thing is set up to run, but without oversight and support from the company.