Cant use the app

I can not create a sign in/ log in after several attempts. I already subscribe to the paper mag but it does not recognize any info I put into create an account. All I get is instruction on how to cancel. I have several other magazines that I now use with my iPad. This is the only one that Ive had trouble. Anyone have suggestions, theyre customer service is worthless. The women could find my subscription info but couldnt off any help with getting the app recognize me. Very unhappy customer!

Needcontroll about Prevention