If you are logging into Bell.net with a Browser, I would check if Spell check has been toggled off at the browser level.
I can share the steps for Chrome, Select the three stacked dots (⋮ ) Scroll to and select Setting ==> Search "Spell check" ==> ...
Try a different port and follow the steps below as a starting point.https://support.bell.ca/tv/receivers/9241_hd_pvr_plus_receiver.how_to_setup_your_wifi_adapter
2 thoughts
Run the Virtual repair tool first.
Second, depending on the modem. Grab the Wi-Fi app from Bell. You can see a birds eye view of your connected devices and their connection strength. Look for the TV.