I heard that if you bought Google Workspace through Squarespace that it was somehow more limited as opposed to buying it through the actual website. I am trying to confirm if there is a difference at all.
Assuming you're subscribing to the same edition of Workspace in both places, there isn't a difference. See https://support.google.com/a/answer/6043385 for an overview of all the various Business, Education, Enterprise, and Essentials editions that are available, and what they each include.
Hope that helps,
Ian