Address Book on Aol

[Dollie]

I recently lost a lot of stuff off my computer - don't really know why or how, but suffice to say I have got everything back now expect when I want to email. On my AOL page I have lost everything in my address book - the window is blank with a small box with a cross in it (in the corner of the blank window.) Similarly it won't let me add new addresses or view the old, lost ones. Can anyone help please?