@terziyski thanks for your reply. I will try it and post here if this is helpful.

It is like a DNS issue. Try switching to a public DNS like Google’s  halloweensquishmallows (8.8.8.8) to see if that resolves the problem.

It is like a DNS issue. Have you tried changing your DNS settings on the TP Link router or  check the forbiddenpants.

It is like a DNS resolution issue. Try changing your DNS server settings on the TP Link Archer VR 2100v2 to a reliable option like Google DNS (8.8.8.8 and 8.8.4.4) or squishmallow halloween Cloudflare DNS (1.1.1.1). This might help stabilize your Internet connection.

Here are steps you can take to troubleshoot and fix it. Here are some common causes and solutions:-

1. Lost internet connection:- This is the most basic reason. Check if your device (computer, phone, etc.) is properly connected to the internet. Try restarting your Wi-Fi router or modem.
2. Weak signal:- If you're on Wi-Fi, ensure you have a strong signal strength. A weak signal can disrupt communication.
3. DNS server problem:- The Domain Name System (DNS) acts like a phonebook for the internet, translating domain names to IP addresses. If there's an issue with the DNS server your device is using, name resolution can fail.
4. Outdated software:- Outdated software on your device can sometimes cause network problems. Update your operating system, web browser, or any relevant applications.
5. Incorrect settings:- Double-check your network configuration, especially the DNS server settings on your device.