We're currently running SquareSpace as our commerce option but feel we'd have a more robust experience with FoxyCart checkout.
I am reading through the integration page but it seems to apply to an older version of SQSP and FC.
It seems there are two modes in SquareSpace, a simple version and a developer version.
In the simple mode, you create pages and such, and there is a place for code injection which is global to the site.
Editing products only offers editing of product data (pricing and variants). The text editor does not have an HTML mode as in your screen shots.
Anyone here know how to integrate FC w/SQSP with the current versions?