ride with a following friends

Picture 1 : follow rider is click.

Picture 2 : follow rider is no click.

  1. I following rider with the Zwift mobile link app. 
  2. I’m watching the attached picture. 
  3. click on the name of the follower, change the color to orange. 
  4. I do not see the opportunity to ride with him 
  5. He’s driving and I can not find him.

Why it does not work? A week ago it worked.