@Abs007
Succesful building of WDS depends on both devices, but in particular on your main router make and model:
The following text is from the TP-Link's official WDS guide:
"In order to build a successful WDS connection between different devices, it requires that both devices usethe same wireless MAC address format.For example,Site A uses 4-address MAC Address format in passive WDS bridge mode,Site B also uses 4-address MAC Address format in active WDS bridge mode.
WDS may be incompatible between different products (even occasionally from the same vendor) since the IEEE 802.11-1999 standard does not define how to construct any such implementations or how stations interact to arrange for exchanging frames of this format.-----From Wikipedia"
Newer HW versions of Archer C20 support so called 'Range Extender' mode in their 'Operation Mode' menu.
If you have WDS option instead, that means your devices is an older HW version.
In general you have to follow
this guide to check where the WDS settings are and follow the according WDS configuration guide.
Besides the first link I mentioned, you can use
this guide according your WDS feature location.