I got the exact same error for their caption requirement HITs. It somehow though, lets me work for all of the transcribing HIT's. Does this...
Exact same thing just happend to me. Two! They Rejected TWO And BAM! Blocked!
I'm a new member here and the exact same thing happened to me. I'm so confused. I got only 2 rejects from them and got all of my other HITs...