@Yousefmalj 

There could be regional differences affecting your connection.  We recommend creating a thread on our global community. community.tp-link.com/en.  This community, community.tp-link.com/us is only able to assist customers in the U.S.  While issues may seem to be the same issue and in somecases they are its always best to interact with the team best able to handle your particular concerns.

@Als9609 

Because i am also a consumer i do get annoyed when companies say this but in this case the first thing to do is reach out to the manufacture of the TV and troubleshoot their device first.  This is because since its the only device having issues the troubleshooting would want to begin at the client and not the router.  If more devices were having the same issue then it would be one thing but with just one experiancing this issue that is where you would want to start.

Things that you should ask or tell them

Netflix is not streaming through the TV

If any other streaming services are working

Confrimation if the TV or the app is fully updated to the latest version

That no other device is having this concern

That your router is fully updated on the latest fimware. If it is not visit tp-link.com search for your model, click on support, click on firmware and download and install the latest version.

Let us know how it goes.