Okay, let me guide you.
I assume your device already rooted.
And make sure you have downloaded the latest version.
I can't guarantee LP will work for any games , but i know it worked for some.
- Open LP and wait till it loads the list. Tap on "Toolbox" -> "Patch to Android" (May be laggy for a while), and a new window will popup.
Check on "Signature Verification status always True" and then tap on "Apply" (Your device will reboot after the patching process is completed).
- After then, make sure you have enable "Google Billing Emulation" and "Google license verification Emulation" on "Toolbox" menu.
Now select your apps and tap on "Open Menu of Patches", it will bring up menu to patch, just tap on "Support patch for InApp and LVL emulation".
New window popup, if you're gonna make an IAP emulation then check on "Support patch for LVL emulation" and "Support patch for InApp emulation", finally tap on "Apply" and wait for a while.
- When the process has been completed, you may launch the apps and try to use IAP.
It's all depends on device capabilities and the apps itself, you may found it works for several apps but may not work for others. So just do a little experiment and keep on trying. I've tried it on Zenonia 4, Stone of Life, Soulcraft, Happy Street, Kritika, etc .
Goodluck dude
And sorry i don't use Skype for good