I am not really into that kind of niche. However, I think that the design is okay, but you could improve some things like getting a new, better logo and you do not need to have the same menu with these two tabs everywhere. Your top menu should contain a home tab which links to the homepage of your adult site.

I am not a big fan of pop ups and such annoying advertisements since surfers hate them as well as search engines. Try to remove them for two weeks or more if possible and you might notice an improvement in your rankings on Google.

Did you try the KenPlayer? It is a very good WordPress plugin that will remove all ads added by XVideos, so if you embed videos it is very useful for you. Check it out at XWPThemes.com.

Also, I would try CrakRevenue offers since they have tons of them and their SmartLink if you have not, because they can make you more money and you should also consider promoting cam affiliate programs. Chaturbate is currently the best converting sponsor, so give them a shot as well.