Infinite scroll down puzzle

Hi there.
I want to scroll down this website 100 times:

I have used infinite scroll before and it used to work well.
Now it only scrolls down once or twice before stopping.

Sitemap:
{"_id":"infinitescroll","startUrl":["https://tap.az/"],"selectors":[{"id":"Scroll","type":"SelectorElementScroll","parentSelectors":["_root"],"selector":"div.sticky-header:nth-child(-n+100)","multiple":true,"delay":"2000"}]}

P.S. This program is absolutely lovely in the way it works and I hope you can help me fix this issue :slight_smile: