Jio fiber range help

I'm using jio fiber.

Facing some range issues,  in the house.

What is the range which we supposed to get and range which you are getting?

I was using 4032 model router/ modem, looks like box.

Spoke to customer care and got free replacement with recent 407 model, vertical one.

Now I'm feeling that old router was far better than the new.

Any one else facing range issues ?

Please confirm your model, your range , any range issues ?

Any tricks to increase range.