It sounds as though you are not logged in as Administrator - needed if you wish to edit anything.
When your initial TP page displays you should see a menu "bar" across the top (or near the top) of the page. It will have options of: Home .... View .... People .... Media .... Edit, then a find box.
Click on the Edit option and you should see "Admin Log In". Select this and log-in as Administrator. You should be able to edit your data from there.
Regards,
Ian Marr