IXL Learning Math Curriculum Designer interview questions

About 2 weeks after submitting my application, I got an email asking to set up a phone interview. It was a 30 phone call with someone currently in the position. Within 15 minutes after the call ended, I got an email with the take-home test. I submitted my answers and after waiting about 2 weeks, I emailed to follow up. I quickly received a reply that I would not be moving any further in the interview process. I wrote back asking for feedback and also mentioned that it was confusing to see that they continually have these positions open, yet are not moving candidates forward. I did not get a reply, nor did I expect to. I *really* wish I had believed the other reviews I read on here and saved myself the time that I spent doing the take-home test!! The positions are still posted. They have original content of mine and I will continue to check their website to see if it is being used.