You said "app" but underneath your question the tag says "Online TurboTax." Please clarify what product you are using--Online TurboTax or desktop software, or do you mean the mobile app?
The desktop software had a problem for several users earlier today with the IP PIN section, but it "may or may not" have been resolved with yesterday's update. In any case, if you are having that "snag" problem when entering/correcting the IP PIN in desktop software, report back and I can tell you how to enter it in Forms Mode.
