Please specify version numbers to at least the third (patch) level.
Theme: JQuery Mobile
The Developer toolbar just does not display. Yes I am logged on as a developer and yes the availablility status is set to 'available with edit links'. I have tried google chrome and IE8 and another IE browser. Makes no difference.
This is a known issue. Use workarounds described in release notes.
Yes the app is on apex.oracle.com:
This is not an official Oracle support channel. Most of the assistance here is provided by volunteers, we don't work for Oracle, we don't have admin access to apex.oracle.com. If you want assistance with apps there you need to create a guest developer account and provide a username and password as well as the workspace name.