www.bitvisits.com uses an invalid security certificate.
The certificate expired on 7/19/2015 19:23.
The current time is 8/18/2015 10:26.
(Error code: sec_error_expired_certificate)
what's wrong with that?
You have to sign a message on bitvisits when requesting a payout.
http://www.bitvisits.com/faq
NOTE: Each bitcoin address needs to have a unique e-mail address in order to be verified. You cannot verify multiple addresses with the same e-mail account
Edit to add.
BTW Certificate is ok my end, all depends on what browser you use, I sometimes see this on other websites.
Try another browser and see if that message shows up or not.