Chromcast cannot be found on network vis my TP Link extender

[jnnleo]

My chromecast cannot be found on the network via my TP Link extender.
It says I need to disable AP isolation but I dont know how to do that for my extender.

[david64]

Hi @jnnleo . What are the model numbers of your router and extender?

[jnnleo]

Extender
TL WA850RE

Router was just provided by our internet company

[david64]

@jnnleo . There is nothing in the WA850RE manual about ap isolation. Normally done in the router.