On a Windows computer, hold-down the "Windows" key (bottom-left of your keyboard), and touch the "R" key. Release both keys.
In the window that opens, type CMD and press ENTER.
In the window that opens, type IPCONFIG /ALL
and press ENTER, to see output like:
IPv4 address ............. aa.bb.cc.dd
Default Gateway .............. aa.bb.cc.ee
Do you see "10.0.0" instead of "aa.bb.cc" ?
to see if you can connect.
Also something to try: within your web-browser, disable any "proxy-server" settings.
@22Monica22 If you have the BlueCurve Gateway internet modem, then 10.0.0.1 would be the default IP address to log in to change your manage the modem configuration (on other modem models, the default IP would be 192.168.0.01), however, this address can be modified within the modem settings, so it's possible to have changed that in the past.
You can restore all default settings on your modem by doing a pinhole reset: locate the small reset hole on the back of your modem, and use a pin or paperclip to press and hold the reset button for 30-45 seconds, then allow the modem to reboot. Once it's booted back up, you should be able to login to 10.0.0.1 or 192.168.0.1 either by connecting via ethernet to the modem, or connecting using the default network name and passphrase on the modem.
It would be helpful if in the BlueCurve Gateway Settings instructions at https://support.shaw.ca/t5/internet-articles/how-to-change-the-wifi-channel-on-shaw-modem/ta-p/6572#... if what was put in Step 1 instructions was not just "Enter the following: 10.0.0.1" and the image just shows that. So what you get is 100K search suggestions. Only when you add http:// will it work.