NFCSecure is getting a massive shakeup. To ensure the best and most streamlined behavior moving forward, NFCSecure is moving from a paid app, to a free, time limited demo that you may later unlock completely. For current users, this app will function solely as a deprecated unlock key.
The functionality of this "unlocker" app is now replaced by an In App Purchase within the free version linked below.
This "unlocker" app is only a key, and useless on its own. Go download the new version at https://play.google.com/store/apps/details?id=com.t3hh4xx0r.nfcsecure_base
Please, if you have ANY issues, PLEASE contact me. This may be a rough transition, and Id like to make it as easy as possible.