To use a domain that you purchased on Squarespace on OfferingTree, you have a couple of options:
1. Transfer the domain over to OfferingTree
This process involves moving your domain off your Squarespace account and into your OfferingTree account and can take up to 7 days. In order to do this, you should have had your domain on Squarespace for at least 60 days.
You'll need to unlock your domain on Squarespace and request an authorization code to initiate this process. Here are the instructions from Squarespace to do this: https://support.squarespace.com/hc/en-us/articles/205812338-Transferring-a-domain-away-from-Squarespace
Once you have this authorization code, please send it to us at email@example.com to initiate the transfer
2. Point your domain to your OfferingTree site
You can configure the domain that you purchased on Squarespace to point to your OfferingTree site by setting what is known as a CNAME record. Here are instructions from Squarespace to manage your DNS settings: https://support.squarespace.com/hc/en-us/articles/360002101888#toc-cname-records
Add a new custom CNAME record using www for the host and customdomains.offeringtree.com for the "data" field.
Once you have set this up, please contact us at firstname.lastname@example.org and let us know the domain you would like to use, and we'll finish the setup on our end.