Yellow icon in status

Hi Szabi, I have the plugin set up. I imported articles yesterday and set a timed rule to import 5 articles every 5 hours. I checked the site today and it hasn't imported anything. When i clicked on manually run this rule, a little yellow icon (i think it's a rhombus) appears next to the status. I presume this is some sort of error. I then check in the logs section but it says that the logs are empty :(. Can you please help me :) thank you Yannis P.S. here is the screencast: https://cl.ly/0b5069