pvclouds is an Adsterra link. OP left his pop up code there, that's where you replace it and put yours.
For getting approved I recommend (if you have any other websites) use another website, something a bit more legitimate. I think the popup link can be used on multiple sites, I've used banners from one site for another site and it still registers impressions, so I don't know. If you don't get approved on Adsterra, try Pop Ads or Pop Cash.
Pop Ads pretty much accepts anyone, however they also accept anyone's website as a pop up which results in your viewers getting pop ups to viruses. I used to run them on one of my sites until users complained about it. But for a shifty site like this where you just want to make money, it should be fine.
So if you can't get accepted on Adsterra, I suggest signing up on Pop Ads, they also have a anti-adblock code for more profits.