I ordered on Feb 9, 2018 and did not get my pre order fulfilled or any contact whatsoever.
I emailed Tenda and asked for my money back with the full intention of filing a complaint with Visa. They issued the refund and I got my money back.
I'm done with Tenda and their pre orders. I recommend others in the same boat to do the same.
They really screwed the pooch on this one.