If you want to connect a domain you have inside of Godaddy to Member App then you can follow the instructions inside of this article to do it.
First login to Godaddy:
Once you've done that then go to your domains located here.
Click 'Manage' beside the domain you would like to connect to Member App:
Scroll down to the bottom of the page and select 'Manage DNS'.
Delete the first 3 columns at the top of your domain if it's currently parked with godaddy.
Now Click 'Add'.
Add your domain name to the form located here:
Once you've done that you will then see that the domain has been added to your list of custom domains.
Copy your domain IP address located here:
Select Type 'A', Host '@' and add your IP address where it says 'Points to'.
Your new record should now show as added within your 'records' list:
Wait for the domain to connect with it's new IP address. This can take up to 24 hours with GoDaddy. Once it has connected the domain will now show as 'Verified' and you can use it within your campaigns.
You can also check your domain verification status manually at any time by clicking 'Verify again' button from the dropdown menu.