D-Link WiFi 6 Router AX4800 (Open Box)

This review is primarily for AX4800 router.This router has nothing to do with MESH. It's just another average Wi-Fi 6 router. As we can see in the attached image, they have clearly advertised this as mesh router. But we can't use this router to extend the network. When checked with Dlink customer support, they clearly mentioned that, we have to buy other extenders available in the market to create mesh. For this purpose, we can buy any routers (even my 10 year old AC router can be extended using the extenders to create a mesh)I already have an AX5400 router bought 6 months back (that is also advertised as mesh router) and it is doing it's job as Wi-Fi 6 router. But I found the range is a bit on the lower side, for both 2.4Ghz & 5Ghz. That's the reason I decided to buy this one, AX4800. So that I can use this one to extend the coverage wireless by creating a mesh. But found that AX4800 cannot be used to extend wirelessly.The customer support suggested to use this router, AX4800 as the main router and then use AX5400 for extending the coverage wirelessly. This is a bad idea since AX4800 has less capacity than AX5400, so we are degrading the performance.Still I have tried to do the same as I dint like to go through the burden of returning the item. Yes it did increased the coverage definitely, but my devices started facing connection drops. It usually give high values when performing speed tests. But most of my devices shows hiccups and had to disconnect and reconnect.After couple of weeks sufferings, it's going back.