You can add WhatsApp to your SquareSpace website. This company from Italy can help you with the configuration. https://digitalyogin.com SquareSpace is a great CMS to create your Website. Beautiful templates and easy to use interface for your website.
If you want to add WhatsApp Widget to your SquareSpace website you can do it using this option: Go to Settings — Advanced — Code injection There you can paste the “script” we generate