from my understanding this issue could be fixed if One can Do Proper Troubleshooting. Here is How One should fix Belkin range extender-
# First Restart the Belkin range extender & check whether your router has an active connection from ISP.
# Carefully Reset Belkin range extender using the Reset Key At the back Or if you could log into Belkin extender console
# after the Reset Just Follow the standard Guidelines to [http://bit.ly/2S6Vm3T|Setup Belkin range extender] as Given Instruction
also i think with increasing Demand for Mesh Routers will Outrun the Traditional Router & extenders in next 5-10 Years.
Happy Ifixing