creating a connection

Hello. I am using the Extract Sentiment operator. I input some Tweets and it worked fine when I used vader or sentiwordnet. I am trying to get Aylien to work. I choose from the menu options, Connections>>Create Connections. For connection type I selected Aylien and Local Repositor and created it. I registered at Aylien and got an app_key and app_id. But when I try Test connection it says: No test performed. Then when I set the parameters on the Extract Sentiment operator, I need to enter a value for aylien connection but in the drop down box there are "no suggestions found". Does anyone know how I can fix this? Thank you.