According to this post https://community.tp-link.com/en/home/forum/topic/259476

Deco is calling bing google facebook netflix ... still frequently and this in AP mode. I can't block because because you only can control this garbage with your stupid an buggy cloud!!! What the hell is wrong with you - TP-Link. I don't want to visit data crawlers like Facebook!!! So go and buy your own hva Servers and call them!!! Or let's get to control this by your users. But more than two years and still nof fix!!! Nobody should user this trash!