Freezing!

Purchased it about a week or two ago, and finally had the chance to use it or work on it. Within 10-15 minutes it started to freeze my iPad. I had to shut my iPad down every time I pulled up he app. And I pulled it up at least 3 times before I finally deleted it off. Is his a common problem? Or could it be the iPad I have it installed on? I have an iPad 4.

Fergy003 about Watermark Pro Signature & Logo