Lifeselector was the only one that worked for me, after I had signed up the banner had stayed up and said "Collect your Kobans" and I was able to get my 600 from that one. But the rest don't work.
Sex gangsters just closes and doesn't even open up a new window any more. So there is deff something wrong with them.
Got the popup for Fap Titans, sex gangsters and Pussy Saga and played and signed up for them all but didn't get any kobans, I've had pussy saga popup 3 times and clicking it and login in I still have not gotten my kobans.