Subdomain as main account - pointing A record from Google Domains - Not Working, Please Help!

Subdomain as the main account - pointing "A" record from Google Domains - Not Working, Please Help! Hello, So I am trying to set up a subdomain website, our main website is currently being hosted on Squarespace but our domain is being hosted on Google Domains. This is how I created it, Google Domains " Chose Domain " Edit DNS " Customize Resource Records " Added "A" record as sub.domain.com points to IP xx.x.xx.xxx WHM " Create Account " Domain: sub.domain.com (the rest was default) I gave this about 3 - 4 hours to propagate, when I created it and visited the website I saw the /index which gave me the thought that it worked. Now I am receiving this error code; server IP address could not be found. Can you help me resolve this? Thanks