Unable to get domain verified with Google Workspace with TXT record

I am trying to get my domain verified at Google Workspace, using the TXT record method (which I have used before).  But I keep getting the message "We’re currently unable to verify your domain. You might need to wait longer for your domain host to update your information. If that doesn’t happen soon, try verifying again.". I have tried multiple times over the last few hours.

I added the TXT record with the host as both "@" and my domain, but neither one worked. I tried toggling "Use WWW" on and off, still no luck. I'm using the Squarespace Name Servers.  I have tried using nslookup to see if the TXT record is visible:

nslookup -q=TXT www.wildeyemagazine.com

And get:

Server: fe80::bea5:11ff:fe89:7496%5
Address: fe80::bea5:11ff:fe89:7496%5#53
Non-authoritative answer:
www.wildeyemagazine.com canonical name = ext-sq.squarespace.com

Authoritative answers can be found from:
squarespace.com
    origin = dns1.p06.nsone.net
    mail addr = dns-admin.squarespace.com
    serial = 1663787404
    refresh = 3600
    retry = 600
    expire = 604800
    minimum = 900

(If I leave the www off, I get an error message "Can't find wildeyemagazine.com: No answer) 

Which suggests that the TXT record hasn't been propagated? 

All help welcome.

Well, it seems to have finally happened overnight. So.. never mind