Mariza Stella Harris - Since you are not yet connected to the world tree with other users where deleting profiles would destroy their tree as well the easiest way is simply closing your account. As part of that process you get options on what to do with your profiles, where deleting is one option.
You find your account settings, as most sites with a login, by clicking your own name at the upper right.
Thank you Bjorn, I was managing to delete the profiles one by one but now I can't find how to do it. I had 23 pages left to delete. It was in GEDCOM Import and Export tab with the options to permanently delete. I managed to find the profiles I manage but there is no options to delete. I simply wanted to delete the private notes that were imported when uploaded the tree but the only way was to delete one at a time. So I may as well delete the lot and start again. I don't want to delete my profile without ensuring that the profiles with the notes have been deleted first.