Try set: Modulation: AUTO lub ADSL2+ Multiplex: VC multiplexing (VCmux) - I can't guarantee anything. Your line parameters are not very good. What is your true speed on contract with Netia? Spróbuj...

I'm not sure but I think that isn't WDS client. I understand that you like connect edimax with TP-link (main router), is this true?

Sorry I can't see anything, resolution is too small.

Give us some screenshots from this configuration on Edimax.

edimax br6424n Edimax supported WDS mode?

I use Everest software in that situation but you can catch something else.