I have exactly this problem too. Super frustrating that adding a newer Deco to an existing M5 setup ends up reducing the features uou have. While we wait for an updated firmware, I’ve temporarily set...

I bought a new Deco X20-DSL (EU v1) to add to my existing Deco M5 (v3) network (as my new ISP doesn't provide a broadband router). Now that I've got it all set up, with the X20 as the 'main' unit, I...