ExoClick has updated its advertiser guidelines for Push Notification campaigns. Banner creatives and text descriptions must not contain adult or explicit content, but advertisers are now allowed to send their Push Notification traffic to adult landing pages when targeting adult category sources. In the last 30 days, ExoClick has added 10 million new users who have opted in to receiving Push Notifications from the company’s global network of publisher sites. This rate is firmly establishing ExoClick as one of the fastest growing Push Notification networks. So try out your adult offers!!

Ah great, so even the LPs can be adult? If Im not wrong, you would be the first network to allow this ... I guess you were collecting the pushes on adult sites, that would explain it.
One way or another, gonna test it out 