One of the common reasons why this may be is because you may not be using the correct email address to login with. You have to use the exact same email address that you used to purchase whatever product you bought. When you go to http://login.choosingnursing.net and log in with the right email address plus the corresponding password that you created, you will be able to easily log in. If you still have problems, just click “Forgot my password” located on the bottom of the login link page and a new password will be automatically sent to the email address you purchased the program with.