ADA Compliance

Greetings,

I am trying to work through a website for ADA Compliance.  I am in need of trying to properly access all the source code for the Squarespace site.  However, I can't seem to find locate where to do this as I am new to Squarespace coming from Shopify.

Before anyone mentions it, widgets for websites to be ADA complaint do not work.  I have been involved with 2 companies before the one I'm at now that had used this method and where still found to be non-compliant and it didn't go well.

So any help to see the source code in full would be much appreciated.

Thank you.