teacherspayteachers.com é seguro?

I have a M.Ed and was helping a student of mine navigate a Create a Quilt Pattern using Transformations. Difficult enough that we are doing it virtually, but the teacher's video didn't show anything other than the first 4 forms. I decided to do it myself and yes it has convoluted instructions. Who checks the content shared on this site for accuracy? Also, his teacher just pulled it off the site having ignored the fact that the students must understand coordinates and quadrants. I'm not impressed.

I was surprised to get a warning from WOT on this site. Unless it was hijacked within the last week or so, it's 100% legit. I and other teachers I know buy lesson plan materials here. There's nothing suspicious about it. The only folks who don't like TPT are those who would like to keep teachers from cutting into their business, IMO.