Recently bought Deco e4 (3pc) to replace my TP Link Archer C20 and Extender WA855RE and to extend the wifi a bit more further. Both the deco's are placed exactly in the same location where the router is and the extender are however Deco E4 is not able to get the signal from the primary Deco. They work fine when placed next to each other. Is there some settings that i need to change. I thought Deco is advanced than the existing router and extender. Deco 3 pc is claimed to cover up to 4800 sqft.