If you have a Verizon Fios Gateway G1100 router, you might experience some difficulties in connecting your Mill WiFi heaters. Please see instructions below on how to solve this:
1) Disable the 5 Ghz network during connection.
2) Set the 2,4 Ghz to communicate in "b", "g" or "b/g" (see second last sentence in photo below).
3) Make sure WEP2 is used.
After successfully connecting you can reactivate the 5 Ghz again if you so wish.