Issue description:
Unable to install Paypal unlocker due to being for an older version of android.
Are app purchases version locked?
Do I need to buy the app again?
I tried to enter my email again in paypal purchase page and it sends me an email with same old unlocker.
What should be my next step?
Install it? 
It works on all Android.
F*** me, i did not kill app after installing.
Ok install unlocker and RESTART app.
Sorry, my bad.