Hi Dear,
When I analysing site I get one 404 broken image. In view source I found it, but I cannot find location from backend to edit it.
<div class="block-srcset">
<img class=" wp-post-image swiper-lazy lazyload lazyload-lqip" data-src="https://www.domain.com/wp-content/uploads/2019/02/160519160015018102-6-300x300.jpg" data-o_src="https://www.domain.com/wp-content/uploads/2019/02/160519160015018102-6-300x300.jpg" src="https://www.domain.com/wp-content/uploads/2019/02/160519160015018102-6.jpg" style="width:100%; height:100%;"/> </div>
</a>
Thank you