The problem with Wi-Fi is that it can be brilliant at breakfast time and useless by lunchtime and you haven't changed anything, BUT, something somewhere has changed, then you can spend hours and even days trying to find a fix for something that can be totally out of your control.
if you remove all the internal walls, electronic and electrical devices, metallic pipes and conduits and wrap the whole building in a thick lead shield you will have a good chance of getting decent Wi-Fi from a VM Hub.
Many people have accepted that the VM Wi-Fi is very poor and have purchased third party equipment that is much, much more powerful than the VM supplied kit and once set up have wondered why they waited for so long.
Thanks for your post and welcome to the community.
I'm sorry you're not getting the speed/coverage you'd expect from your wireless connections.
I've had a look at the backend of your services and some devices are receiving a poor WiFi signal due to their distance from Hub and/or the Hubs location.
The Hub's location could be causing the Coverage problem – check that it is:
•Out in the open
•Next to the TV not behind it
•Away from large bodies of water (e.g. fish tanks)
•Away from baby monitors and cordless phones
If you've already done the above then we could look at sending you boosters to improve the wireless connection. These would be free for customers on the full house or above packages.