The "Add Registration Question" plugin by peregrine & me also includes an option to disable the captcha, so you do not need an additional plugin if you are using it.
https://open.vanillaforums… (View Post)
This is currently not possible.
Iframes shouldn't be allowed for users and as far as i know, there is no easy way to do so.
However, you can create a custom plugin, that allows iframes from googl… (View Post)