I am using 3.027 version firmware on B1300 ( I can’t upgrade due to PPPoE issue on later releases). I have manual DNS server settings and using nextDNS. Now I am facing issues with Netflix and Prime Video and both are unable to connect.
I have toggled “Override DNS Settings for All Clients” on and off and then Netflix /Prime Video start working but then stops again. This happens even if this setting is on or off, you just have to change it to make streaming services work for some time.