the plugin worked great backing up to a dropbox.
After a botnet attack I forced https/SSL connections for the admin area by adding "define('FORCE_SSL_ADMIN', true);" to the wp-config.php. Since that time BackWPup doesn't work anymore telling me: "SSL: certificate subject name '***' does not match target host name '***'" at the http response test.
The wordpress installation has its own URL on a V-server. Therefor the two URLs don't match.
How can I get BackWPup to work again? It is a really great plugin.