If you are logged in and can't run lessons, it is likely that you created the account prior to 2012 when we allowed for guest accounts. You will need to create a new account using an authorization code from your institution. We maintain a list of authorization code contacts on the website or you can always check in the library.
If you used to be able to run lessons, and now you cannot, it is entirely possible that you have two CALI accounts, one with an authorization code and one without. If there's ever any confusion, contact webmaster@CALI.org and we can find your account(s).