Let's try re-entering your login credentials to see if this resolves the issue. 

• To do so, click sign in on the homepage of your SLING application. 
• Next, enter your email address and password, then click sign in

Try resetting your password. 

• To do so, start by visiting sling.com/account 
• Once on the sign in page, click Forgot your password?
• Enter your email address and click Submit. An email will be sent to your registered email address to reset your password on file
• Click on the link within your email address. You will be redirected to a password reset webpage. 
• Now try changing your password.
• Once you have changed your password try signing in using the new password. 

Is it possible the email address you are entering while signing up was previously registered?

• If you are trying to reuse a previously registered email address, please contact us so our agents may assist