how to configure avast SecureLine on my router

Avast SecureLine VPN
1

how to configure avast SecureLine on my router is a TP-Link Archer MR200. I am a beginner. I bought a license, and it does not work, please help me :-\

2

You don’t have to change anything on the router.

https://www.avast.com/faq.php?article=AVKB63
https://www.avast.com/faq.php?article=AVKB80

3

Hello, I Have 2 routers, with the same config, with the archer MR200 Tplink, secure line is connected’(green VPN window), but it is impossible to connect to internet.
with the other router, d-link DWR-921 same config, all is good! I do not understand,
Help please