@Colpibr -- the answer will still likely be "poor signal"
The next time that you contact Shaw, ask the Shaw Agent to remotely logon to your BlueCurve, to view and analyze the "signal-strength" (and other values) that the device is collecting.
How far apart (and through how many walls) is each box from your BlueCurve? Your walls could be reducing the signal-strength.
Got a WiFi device that you can connect to the BlueCurve, and take your device to the room where the TV box is, and view the signal-strength of your device's WiFi at that location? Of course, view the signal-strength when your device is in the same room as the BlueCurve, for a "baseline" reading.