If you see this screen, you can usually fix it by clearing your browser cookies. You can find instructions on how to do this in your browser's help file or at AboutCookies.org. Another way to deal with this is to open up a "private browsing" or "incognito mode" window, which means that your current browser cookies will be ignored. Most current browsers allow this.
If the error persists, it's might be a problem on EBSCO's end. Contact the library if we're open; if not, try again later. Here's what the error screen I'm talking about looks like: