I sure hope it is a good sign and that others who got even one of the same questions we got wrong, are able to attend the protest. For us, the protest is on July 12th from 10 am to 12 pm.
I also took the exam on 4/23/16 PM & got 21, 45, & 77 wrong as well. Are you gonna protest on July 12th? I most likely am. Also if this info is useful, I put for 21) A 45)D 77)C