Connect Squarespace DNS to your domain
Before starting, make sure that your domain's Nameservers are pointing to Crucial. The easiest way to do this is to check your domain on ozdns.com.au The first nameserver should be nssyd01.crucial.com.au
First, log in to https://www.squarespace.com/login
Next click on SETTINGS
Then click on Domains
Now click on CONNECT A THIRD-PARTY DOMAIN
Enter your domain name and hit CONTINUE
Select Other as your domain provider and hit CONNECT DOMAIN
Click OKAY on the next screen
Here is the important information, your DNS settings.
Keep that page open. Now open another window and log in to cPanel. Click here for a quick guide if you're unsure how to do that.
Find the Advanced DNS Zone Editor and log in
For the first record, you'll want to add a record. Copy and past the code from Squarespace's website. Note that when you paste it, cPanel will automatically add yourdomain.net.au to the end of the code. This is ok. All CNAME records end like this.
The next CNAME record already exists. Find it down the list, click edit and copy the Required Data from the Squarespace page into the Address field in cPanel. Then hit Edit.
The rest of the record you will need to add. Just copy and paste the data. Make sure for each entry there's a full stop at the end of yourdomain.net.au.
Back to Squarespace. Hit refresh every few minutes. The DNS settings are normally live within 15min but they can take up to 24hrs. Once all the fields are marked in green as Correct, hit TEST CONNECTION and your site is ready and pointed to Squarespace.
Should you have any problems with your Squarespace site, you can find support from Squarespace here: https://support.squarespace.com/hc/en-us/requests/new