If you are unable to add your library card to your user account on Cineasterna, it is because the information provided is not accepted by the library system. This may be due to incorrect details being entered or because your library card is temporarily blocked or inactive.
To check this, visit your library’s website, click on "Log in," and enter your details. If you can log in to the library’s website using your credentials, you should be able to save the same login details to your user account on Cineasterna.
Contact your library if you are having trouble logging in to their website.