Check Quiz button is greyed out for me and It is not getting enabled even after I reconnect my test orgs. How do I get the check quiz button enabled on Trails again?

I'm not able to check my challenge for one of my modules even though I have logged into my trailhead account.



Check Challenge button is greyd out. Need suggestions.

I was able to gain badges for the other modules also I have finished 100 pts questions within this same module.  
1 exercise away from earning a badge and its not allowing me to check challenge.