RustyBear, I agree, the Epson app should just work but there are so many variations in set up (you have only to read the other suggestions on here for downloading printer drivers etc). I have Macs, Windows and Android - I scan to all of them but not without difficulty in setting them up to start with.
I had to separate out the bandwidths on my router recently to allow an older appliance to connect to the 2.4 ghz bandwidth, it couldn't work with 5 ghz. Who knows - there are so many app/device/version setups.
Sometimes a work around does the trick and it's a simple work around too, if it works. 