Communication Failed - Error 10093

[Communication Failed - Error 10093]

And now my printer is useless.  It says there is an administrative lock on my Epson WF7720 and I am unable to change any settings for printing.

[Communication Failed - Error 10093]

I've had this software since 9/28 and have managed to get all the way to the activation key.  I have downloaded the right firmware and activation key executable according to the website.  I have a WF7720 and the BUY screen only shows one download for a WorkForce printer.  I purchased the key, received the number by e-mail and have entered the "activation key" in the SN window (all according to instructions).

Now I have a "Communication Failed - Error 10093" and customer support says I downloaded the wrong firmware because the receipt on the order only shows the first two WorkForce printers that the firmware covers.  I need someone who understands the problem to help me.