If you do not immediately continue with stage2 of the deployment process, you CANNOT continue setup at anytime by logging into the VCenter server management interface at the supplied URL.
When you try it, this is your only option that the page displays.
This bug goes back several versions of the 6.7 upgrade/installer. I already opened a support ticket on this and the best they could do was tell me to start all over again.
EDIT: Even changing the URL to https://x.x.x.x:5480/configure/#/upgrade will just redirect back to https://x.x.x.x:5480/configure/#/installer
When will this be fixed?