Hi, Ive got done dead zones in my house, so I've bought a DECO M4 mesh devices. But do they work with a Archer C80 router? It looks like the DECO has it own WiFi and cannot connect as mesh to the C80

Hi all, A few days ago, we've got 1GBit internet. Internet (Fiber with mediabox) directly connected to the TP-Link Archer C80 router. On the wifi the connection is slow, around the 200-300 MBit while