Impressive investigation done by you. I have already notified Coinbene team about this SSL issue and they assured me that their developer will solve it as soon as possible. Thanks for letting me know about this but you may haven't checked their official thread yet. They have already made a reply about that there.
Oh, i am sorry Talkstar, I really didn't check their official thread before because I just wanted to tell everyone to raise awareness about any campaign before they start promoting it. I hope the team finishes this quickly and the campaign goes according to plan and provided that they have resolved the problem especifically with the code signature. We just hope people don't register on site that are not safe when it comes to trading their asset.