Ecwid blocks and Avia Layout Builder

Hi I am trying to integrate one of my products from Ecwid onto a webpage in my site. There are a couple of issues:

1. I use Advanced Layour Editor and it is not showing the Edcid prdouct blocks as elements I can add in the Plugin Additions Tab
2. If I revert to the default editor and add the block that way then it just doesn’t work with the page at all. It overlays the product box stretched out on top of the existing content, as a full page length box.

Ecwid offer shortcode to add products to webpage but there is not abiality with these to edit the appearance, which you can do with product blocks.

Please can you advise.

Many thanks