Pay Per View Installed ... and nothing !

Hi !
I've just buy and installed "Pay Per View" on one of my website and it doesn't work.

I say to me "May be my theme is bad?" but when i move for the defaut "twenty thirteen" theme, nothing again.

Pay Per View Hide nothing on my posts (all my settings seems to be good)

Some good news for me ?

Thanks,
Ludovic (from Reunion Island)