I used to forward my domain to a temporary page. Then I started a Squarespace site and directed the domain there, but my domain is still going to the forwarding page. I checked with Godaddy settings and there's no more forwarding addresses. Is it just that it takes a couple days for a domain to completely go over to the new site, or is there something else that I have to do?
For the GoDaddy settings, I would go back to the nameserver settings and ensure your squarespace nameservers are setup.
What I've found is anytime I change the nameservers, it often helps to clear my local DNS cache.
Click "Start" or the little Cortana Circle
In the search box enter "cmd"
In the black command prompt window type in: ipconfig /flushdns
If the problem persists I would also clear your internet browser cache/history.
If the above doesn't work, try restarting your computer before loading up the page again.