One common cause of this problem is when members have more than one site account without realizing it; one is a standard Slate account, and the other is Slate Plus. Try signing out of your account, clearing your browser’s cookies, and signing back in. Make sure to access your account through the same log-in you used to sign up for Slate Plus—if you created your account using your Facebook, Yahoo, Google, or Twitter account, make sure to click the appropriate button to log in.
It’s also possible that you have enabled an extension, ad blocker, or certain browser settings that are interfering with the login system. Try disabling your ad blocker, adjusting your settings, or using an alternate browser.
What steps you are taking
The problem you encountered, including any error messages you saw
Visit this page to help us identify your computer and browsing configuration. Copy and paste the information into your message.