Did you sent docs by courier of uploaded? Don't they usually send you a reminder if they don't receive the requested document? They won't any update in either GCKEY or ECAS as to whether or not they have receive it. Hopefully you get a reply from them but as you said ECAS upated on 28th we are processing, this is a good sign
They hadn't asked for new documents. I just wanted to get an update. I didn't know about ECAS and so I used webform to contact then. To get an update to see if the file had been recieved by the Visa office. I read about people's who's got lost in the mail and I just wanted to make sure I was not one of those unlucky cases. With how slow they are to get back you don't want to find out 1 week before your year is over that they lost you files and need you to resend everything. Imagine how tedious that would be.