Case
We sell pdf''s from our site and pdfs can be ordered from the site by selecting a book, putting it in a shopping cart, then signing in with a password or as a guest, and then checking out.
For some reason, when a purchaser signs in he or she should be taken back to the shopping cart to check out, but they are being redirected back to our home page and cannot complete an order.
Two things recently changed on our site: We instituted a new firewall from Sicuri and we have noticed a great deal of sign up activity from gmail addresses in Russia.
Perhaps we have been hacked, not sure. Need to get this fixed as soon as possible.