@OJX Yes, finally it is joke and it is bad product with low output power and weak signal. Which Xiaomi wifi extender you use ?

I changed channel, but situation is same. How to check output power, I doubt that power is same as for any other ordinary routers ?

I have same router and same problem (signal is same or below signal of any other 2.4GHz router). I'm expecting that 1W power should be with better range than other ordinary routers. How to increase...