Afternoon @Vsridhar
Welcome to our family and welcome to our Community; thanks so much for your first post; I was sorry to understand that you seem to be having some issues with the WiFi range on your new Hub?
After locating your account, I can see that you have our Hub4 which is our newest hub available and you shouldn't be having these issues with this hub and the speed you subscribe to - however, WiFi is not guaranteed due to the nature of the beast. Wall thickness, room size, household appliances, other wireless devices in the home, signals from other wireless networks local to you, wall insulation etc can all impact WiFi speed and signal.
I can see that your hub was only recently installed and was rebooted around 3 days ago - the signal levels are looking to be where we would expect for your equipment and speed you subscribe to. We have no errors showing and no known area issues.
You currently have 2 devices connected over WiFi - how's things been looking since your post last week?