Can't download – Microsoft PowerPoint Review

I've had this app before when I needed to touch up projects for school without having a computer handy and I really liked it last year. Well over the summer I deleted it because I had no need for it but now school is back and I want it again. The only problem is every time I press to download it it freaks out and won't let me. I'm really frustrated and hope you will fix it soon.
Review by Loverstrucklaura on Microsoft PowerPoint.