Thanks, I spent a lot of time (and money!) making sure the site remains available, especially the deep linked files. I agree the interface could be improved and there are still some features I need to add. You can actually create folders (called pages) by going to a page and clicking the 'Edit Page' button at the top right, then select 'Add new page here' :) Rebrickable keeps me very busy, but I have plans for a big overhaul of Bricksafe within a few months.
I have had some email/registration problems in the past which I've fixed. If you'd like to try again, let me know if you have any further issues. I can be contacted at support at bricksafe.com or support at rebrickable.com.