Follow these steps to make sure you're using the correct credentials to log into the library databases.
If you are still unable to log into your library account or into a library database, try clearing your browser cache and cookies. Follow these instructions to clear your Chrome browser cache and cookies, or if you're using a different browser, find instructions on its support site.
You can also try using a different browser and/or opening an incognito/private window These instructions can help you open an incognito window in Chrome.
If you run into problems, don't hesitate to ask a librarian.