Thank you for the post.
127.0.0.1 is the loopback I.P. address for any computer.
More information on that can be found here:
If the FileMaker Server 13 installed without error and successfully deployed, then the WebDirect Start Page can be accessed at the following URL:
http://<server I.P. address>/fmi/webD
Are you able to access the WebDirect start page at the above URL using your server's I.P. address?
Additionally, here is the FileMaker 13 WebDirect Guide:
Please let me know if any of the above needs further clarification.