Most LuckyPatcher Pre-Patched APK's are to allow free in app purchases, but how to use them seems to be causing some confusion. So rather than writing or showing a generic video on how to use with inapp purchases, i decided to use an actual live app example with one of the pre-patched apps people are having problems with:
Step 1 - Download Pre-Patched APK from Sbenny
For this example we will be using Chapters
Once you have it downloaded and installed please open it and the
plus icon next to the diamonds:

Now simply select whatever amount of diamonds you wish to Hack (I hit the $99.99 one for 1500 Diamonds) :

You will then be presented with a LuckyPatcher in app purchase hack screen:

As this is a consumable we are purchasing (A repeatable purchase), please make sure not to tick any of the boxes and just hit Yes.
Step 1 - Download Pre-Patched APK from Sbenny
For this example we will be using Chapters
Once you have it downloaded and installed please open it and the
plus icon next to the diamonds:

Now simply select whatever amount of diamonds you wish to Hack (I hit the $99.99 one for 1500 Diamonds) :

You will then be presented with a LuckyPatcher in app purchase hack screen:

As this is a consumable we are purchasing (A repeatable purchase), please make sure not to tick any of the boxes and just hit Yes.