Cannot add ring chime to my app

Hi, I just purchased a chime 2 for my ring 2nd gen. However, i'm trying to add it in to my acooun but is not working. I get up to the point where i connect to the ring wifi and the green light suppose to blink slowly but is not doing it. The green light keep flashing on the same way and the app is keep asking me if is flashing slowly. I have tried to reset it by holding the buton for 5 sec. But this didn't help either. Any suggestions?