HI Need advice from the more techie minded than me, I currently have a Archer D router and 2x Mesh Deco M4 units, giving me good wifi 85% of the time, i was looking to replace the D9 with an Archer AX

Hi Recently purchased an Archer D9 as a replacement for my ISPs tp link router. With the help of my ISP i have configured the unit (i am using the WAN) function rather than ADSL. When I first connecte