Do we get any update of "documents received" if we send them any requested documents? I sent mine back in November 2016 when they asked me to resend the passport size photographs. I haven't received any update from their side though; the last update shows this statement:
"We sent you correspondence on November 9, 2016. If you have not yet provided the information or the requested documents, please do so as soon as possible. Please wait until you receive the correspondence before sending us additional information, as the correspondence will outline all information that is required."