Hello,
is it possible to set recaptcha for user Registration only? Not for Login? I found no option in plugin settings and it would be very useful.

Problem is that recaptcha does not allow more than one its instance on a single page. And I have Registration and Login forms on a single page (for eshop purposes) so your plugin does not work here. I do not need to use recaptcha for login, only for registration but found no way to set it this way.