Hi Abhishek,
I do not have a TP-Link router to check and let you know the exact steps. However, you can check your router settings dashboard and lookup for setup pages like Filters
or similar. Here you can enter the DNS names or domain names you want to block.
- whatsapp.com
- facebook.com
- twitter.com
- youtube.com
By the way, did you watch our YouTube video? I hope this is still working. 🤞