Thanks for the update enrico.
I was going to suggest that you use relative links if possible. The new version has a better URL matching script and you should no longer need to use the full URL for SSL or two URLs (one for SSL and one for no SSL) as the plugin should redirect either one – if they come in via SSL, it will redirect to the SSL version of the destination URL (granted the destination is not a full URL) and regular redirects will go to the protocol you have set in your WordPress setting for site URL
as the default.
For example, if your site URL is set to https://mysite.com
and a request comes in for https://mysite.com/somepage/
and you have a redirect set up as
/somepage/
to redirect to /some-new-page/
the redirect will go to https://mysite.com/some-new-page/
as you have https
set as the protocol for your site URL link.
If your site is set as https://mysite.com
and allows SSL and a request comes in for https://mysite.com/somepage/
it will go to https://mysite.com/some-new-page/
as they came in via SSL and your site allows SSL links.
Hope that makes sense!
Warmest regards,
Don