Hi Pilou,

it should be the little blue button below the Captcha code. The other two buttons, the big blue and big green are for other network media registration, if i remember correctly. Like QQ (large blue button) a chinese service, similar when you register at sites via a Facebook account.

@Franz currently i can't help because i'm busy at work, but it looks like you have not merged the corners. I did it that way that i merged the corners with their sides first and then merged the other sides with the top surfaces and at the end merged those large stripes as one surface.

Regards
Stefan