I have two different domains, one is www.contoso.com and the other is simply contoso.com. The second is the one we for our emails and what-not, and it says the setup is complete and there are not problems. However, the www.contoso.com domain says that setup needs to be completed, but when I try to do that I'm told it's ready to go. I'm trying to rename my Office365 to the www.contoso.com as the instructions indicate, but there are no domains in the drop-down box. This is incredibly frustrating because it's so circular. I'd really love any advice!
-----------
Edit: Now the domain has stopped saying it needs to be completed; however, I still don't have it showing up in the drop down box in the 'Rename Website' window from the SharePoint admin center.
The problem I'm seeing is when it says to select "SharePoint Online" for the domain purpose, I'm not given that option. I have only the option to select Exchange and Lync. Thanks!