Hmm well Nav has been re enabled on Poloniex, but still no reply from them about my stuck nav - yes thousands of confirms on the BC but not credited to me yet.
had the same issue as well. Sent a few navs last week didn't came in my account till after 2 days. Now I sent more than a few last sunday, still MIA. The ticket I sent after the first incident last week is still left in the cold without a reply. Just submitted another and I won't expect any replies soon.