Laura, you can email headquarters to ask about logging onto the private part of the website. They'll let you know if you can do it (I would think you can but I'm not certain) and how.
As far as wearing letters -- if I'm remembering correctly, I think I read in "The Ivy Leaf" that Alpha Phi considers it hazing to not allow new members to wear letters. So I would assume that you can wear letters, because really I think you are basically a "new member" just not in the "traditional" sense of the word. Anyone please correct me if I'm wrong!