After provider increased the speed from 100/20 tio 500/250 the speed over the deco m5 is still 100/20 (via speedtest). The speed measured via provider's router (wire and wifi) is 500/250. What is reas

I bought the Deco M9 to extend my old Deco M5 system. After I have Adde the new units I Will change the primary uint från one of the M5 units to the new m9 unit, but i couldent fond out how i shold do