Why!!!!???!!

I had this app on my old iPhone 4s and it worked perfectly. I loved it! I recently upgraded my phone to an iPhone 6 and I cant even get signed in. I dont want to sign in through Face Book and when I try to sign in using my zip code it says the zip code Ive entered is not a valid US zip code. I beg to differ. I really, really wish this would work for me! Whats going on???

blc9501 about Vallet - Virtual Wallet