If you have followed the instructions setting up your custom domain and are still having problems:
1. Have you waited 72 hours after registration with your DNS provider to test your new domain? The registration of your custom domain URL can take up three days to be saved.
2. Verify that not only is your custom domain configured with your DNS Manager, but that also the Custom Domain is configured correctly in your Paper Settings > General > Custom Domain.
3. Test your domain by entering your custom domain name in the box and clicking the Save button. In your DNS, CNAME should be pointing to paper.li -or- the A-record should be pointing to 18.104.22.168. If you are getting an error message, the fields in your DNS Manager are not set correctly.
4. In your paper.li settings, your custom domain should be entered in field without the "www" and without the "http://", so that if the user does not enter the www in their browser, the URL will still be found.
Example: If you custom domain site name is www.mycustomdomain.com, you would enter "mycustomdomain.com" into the field.