email messages are there but no longer sorted into subfolders

OK, I will tell you up front, I am no computer wiz.

I have folders like "Inbox," "junk mail," "deleted items," like everyone else, and i added a few more, like "Information," under which I have subfolders to organize different sorts of Information, such as "contacts," "recipes," "jokes."  Well, had my tech do some stuff (unrelated to my email acct, as far as I know) and now I still have all my emails in the "Information" folder, but they are no longer in subfolders...they are just all in the "Information" folder in order of date.  However, when I sign into hotmail online, the subfolders under the "information" folder are all intact.....???