I hope that it works out for you.
Some more thoughts I had....
Along the same lines, as one of the other posts, try taking the batteries out of the console rather than just hitting the reset button. After I got my replacement anemometer, one of my consoles would sync up and the other would not. I tried the "channel scan" and the reset in back of the console but that did not fix it. Once I removed all power sources from that console for about minute, then did another "channel scan", all worked fine again.
On the other side, about three months after purchasing my WMR968, the symptoms that you describe were similar to my malfunctioning outdoor temp/hydro sensor. I was lucky enough to get it replaced under warrenty, from my neighborhood "mom and pop" electronics store, where my wife had purchased it as a gift.