Crashes on 5s

I use the app mainly to take payments. The app and service are great, however the app crashing randomly on my 5s. It happens on the signing screen - after it has authorized the payment, but before the payment is finalized. This is bad for a number of reasons.... Anyways, Im getting by using an old version of the app on a old 3GS and its working fine. PLEASE FIX THIS BUG! Thanks!

Gvpjared about Groupon Merchant