Hi, there are some text that can't be translated there.
For example pay-per-view.php:1028
echo $tips->add_tip( sprintf(__("Selects if Pay Per View is enabled for this %s or not. If 'Follow global setting' is selected, General Setting page selection will be valid. 'Always enabled' and 'Always disabled' selections will enable or disable Pay Per View for this %s, respectively,
And other lines with sprintf(__