Hi,
I installed the plugin and have the same problem as well. Below you'll find the html code produced with the lazy load data attribute. Is it possible to make the plugin compatible with this?
<img src="https://someblob.blob.core.windows.net/nopcommerce/0000125_test_415.jpeg" data-lazyloadsrc="https://someblob.blob.core.windows.net/nopcommerce/0000125_test_415.jpeg" alt="Picture of Test" title="Show details for Test" loadedimage="true">