Holy fuck, that site displays full page ad on top of the page and when you scroll down, it scrolls back up. After certain time you can scroll down.
If your phone is a rooted Android, you can also use a hostfile that blacklists many ad servers, such as https://adaway.org/
On iOS, "Content Blockers" for Safari can be used for ad blocking, and there is plenty of choice in the App Store.
Selector-based DOM element removal/hiding and blocking of specific requests by URL instead of by domain