Hello, do you know if it is possible to edit an Envato FSE theme with Greenshit ?
There might be some limitations depending on the specific theme you’re using. Greenshift is a flexible plugin that works well with WordPress blocks, but for full compatibility, you’ll want to ensure that the theme supports full site editing (FSE) and the necessary block structures. You may need to adjust some settings or do a bit of custom coding if the theme has its own page builder or layout controls 
It’s always a good idea to check the theme documentation and Greenshift’s compatibility guidelines to avoid any issues.
If a theme is using Gutenberg blocks, then yes, since Greenshift is just Gutenberg blocks under the hood.
Hello, very tanks for your rapidly help, I am new in WP so I think I have to install the Greenshift specialy theme it will be more easy for me for not have mofidiy code. Sorry for my poor English, I would try an Envato theme but the theme that choice it is not an FSE theme so do not work with Greenshift, the choice on Envato FSE theme is poor and model are not precised if they turn with theme.json.
Thanks for your rapidly answer, but on the Envato site, the theme FSE it is not precised if they are ok with theme.json and if I have to modify code to adapt Greenshift blocks it will be to difficult to me who is newbie in WP so I think I have to use the specialy Greenshift theme. Very thanks to you.
I really would like an Envato theme but it is not FSE so perhaps I have to change and take the theme that I want and take Elementor Pro to edit it. I think it will be more simple for me because I am new in WP but lot of people do not recomand me Elementor because very heavy code…I am lost in my choices…