First question, do you have internet access on MR3220?

SNR depends on the quality of the telephone line.

My wireless configuration - My LINK

Unfortunately, there is no rule, WDS is not standardized. Niestety nie ma na to reguły, tryb WDS nie jest ustandaryzowany.

Universal Repeater is implemented in typical access point from TP-link - WA701ND or WA901ND Universal Repeater jest umieszczony w typowym access point-ie od tp-linka. Nie potrzebuje wsparcia WDS w...

Better solution is universal repeater because typical repeater needs WDS support in main router. Can you try Client or WISP (receiver) and wired connection with computer. Lepszym rozwiązaniem jest...