Hi @Marvin_S . Thank you for the answer. This link I've already tried before, but still losing connection. Directly from ISP works well, but from any Deco (main or other one) it goes without internet...

Hi TP Link team :) I'm using the S7 with 2 routers (one as main, another as extension using cable between them). Before the last firmware upgrade (I don't remember what version I was, sorry), they're...