I had the same issue and may have found the solution. Just open your Square Space account and go to your domains and select the domain you want the emails to be forwarded from. Then select manage domain settings. For me it appears in an overlay window on the right hand side of the screen. In this menu you will find the email forwarding tab. At this point the setup should be similar to Google domains.
Issue with email forwarding after Google Domain migration
in Domains
Posted · Edited by An21Ty
spelling mistake
Hi sjka2,
I had the same issue and may have found the solution. Just open your Square Space account and go to your domains and select the domain you want the emails to be forwarded from. Then select manage domain settings. For me it appears in an overlay window on the right hand side of the screen. In this menu you will find the email forwarding tab. At this point the setup should be similar to Google domains.