Using the URL on your pdf, i am able to see the CSS on both the front end and back end. If you are still having issues, have you read this thread? showthread.php?t=10236
It looks like the other issue you had with PowerStore was dealing with saving the CMS driven content, which was answered. Those are the only 2 issues I see you have posted about. The only way we can help is by having details about the specific issues you are encountering.