Squarespace customers should always go directly to www.squarespace.com and sign into their accounts from there. If there is something that they need to do, they will be notified after signing in.
A "Squarespace Your Domains And Website Has Been Terminated" Scam
Date: Monday, October 29, 2018 1:56 PM
From: Squarespace Support firstname.lastname@example.org
Your domain(s) and website has been terminated.
Your Squarespace domain(s) and website has been terminated as of today October 29, 2018. To keep your domain(s) and website back online, please visit the link below.
UPDATE MY INFORMATION
If you have any questions, We’re here to help.
Squarespace customers who have already been scammed are asked to contact Squarespace for help.