@Jdhn Modify the internal port to 7431 on WR940N port-forwarding and try again:

@Mysterious_Life Check this post regarding missing internet connectivity when using the WDS feature of C6.

@digifi For the router login password, try admin in lower case. However, if admin doesn't work and no other possible password, please reset your TP-Link device to default settings by pressing and...

@cannonzoo How about the latest FW release - Archer VR400(EU)_V2_220126 - here.

@BrendanH You can build an Easymesh with wireless backhaul as well, but the ethernet backhaul will give you the best speeds and stability overall. Click on the hyperlink (blue text) from my previous...

@BrendanH An optimal scenario considering the thread you mentioned would be two or more (depending on premises size) Archer C86 in Easymesh with ethernet backhaul between them.