Hi! I need your help. I have the same issue "not valid signature provided" and just called CGFNS, they said they sent a letter to my school in order to verify the signature. I believe the problem is that the dean instead of signing her entire name she signed with her regular signature (scribble) and it may not be clear for.CGFNS. Due to vacation period, my school will not work until the first week.of aug. And i don't know how long it will take for the letter to arrive. I was wondering if i could skip this step and ask the school to fill the "transcript validation form" and send it again to CGFNS because i dont want to waste too much time waiting for the letter to be received by the school. Any suggestion? Thanks!