Initially page is not loading properly before it shows correctly

I did a speed page analysis and noticed that the preview of the website is not as it should… It looks like this, see link.

https://www.dropbox.com/scl/fi/lemmx38of3a3zbj3mm617/Intial-view-homepage.png?rlkey=nt2x8z0aw28qxd85vz4psou3w&dl=0

So I did a test and indeed it’s showing the above layout before loading the actual page. If I deactivate the plugin the issue is gone.

So something is messing up a little. Could you help me with this?

Thanks for your help,

Chantal

The page I need help with: [log in to see the link]