I recently had this issue with just one of my sites http://luv2compare.com now i have it on my other site as well http://abotravel.net. an ad tab opens on every new load of my sites i dont know what is causing these ads to open on the first user click. i have disabled all the plugins and nothing it was still the same.
Could you please send us the list of plugins you have on this website http://abotravel.net/ and if you could send us the wordpress log in credentials of this website then we will be able to look into this issue thoroughly. contact us at @luzuk.com">firstname.lastname@example.org for keeping the privacy.