Hi,
My name is Angel. I am an Independent Advisor. Thank you for posting in Microsoft Community.
This feature depends on your internet provider and of course the router you are using.
You can try the following methods:
-Enter the IP address 192.168.0.1 in your Internet browser.
Use admin as the user name and password (or use your personal login).
-Select the menu item Wireless, then select Radio in the 2.4GHz section.
-In the top selection field, you can now activate 2.4GHz.
-Then click Save.
If you prefer answer who is your network provider and i try to help you.
Hope the information provided is useful. If the issue persists, reply here and we will be glad to help you.
Angel.