Great game...but won't allow me to buy more levels – Groops Review

Great game! Very addictive. So much so that I finished all of the levels. I would have rated it a 5 star if not for the following and the lack of help answering my question as to why this happened and how to fix it......I clicked on the strip at the bottom that says "Get More Levels" and I get a pop up that says if I want to share I have to be logged in to Facebook...huh? Share what? I just want to add more levels. I've emailed but no response. So, being I've completed it and cannot add more levels...deleted it off my iPad. Otherwise...it really is a great game.
Review by Ravenstreasure on Groops.