Just had a look at the homepage (with a cache-buster string added to the URL to make sure I saw a “fresh” version) HTML source and all seems OK to me rostyk1000:
1. you have multiple <img
tags which have the SVG-placholder as src
and the *real* img URL as data-src
2. you have lazysizes.min.js
loaded (incl. the lazysizes configuration).

why do you think images are not lazyloaded?