Do these plugins work on Personal Plans?
Squarespace doesn’t allow custom code on personal plans, they are considered Premium Features.
If you’re on a personal plan, I have found a work-around that has worked for many years, but Squarespace might change this at any point, so use at your own risk.
The work-around is to add the installation <script> & <link> into a Markdown Block anywhere in one of your Footer sections (Edit Page » Edit Footer Sections). And then use Markdown Blocks anytime you would otherwise need a Code Block.
As of today, July 5th, 2024, this method still works, but we don’t support this method as it could change at any moment and it’s outside of the limits of what we have control over.