I have updated my MX records to use Google Workspace as my email for my squarespace site. It will not activate, gives me error that I need to add my MX records. All looks good to me, but obviously I am missing something. I am unable to edit the MX record

Site URL: http://www.dpoc.org

I have entered by dropdown the MX records for Google Workspace, but cannot activate them because it tells me that I need to add all records. I have attached MX records and DNS records. 

I can' figure out how to access the squarespace dns page to add the extra dot after com, hoping that would fix the problem. I havea worked on this for about 3 days and have tried repeatedly to activate. 

Please help