I've just downloaded the app and done tests in the rooms I'm having issues with and as you can see i'm not getting 20Mbps in them, these are the results:
Bathroom: As you can see I'm only getting 16Mbps and this is with all the doors open, its worse and sometimes dont even get a connection with them closed.

Bedroom 1: This room barely has a connection and its not strong enough to even scroll through social media because stuff don't load, only getting 1Mbps.

bedroom 2: I couldn't even test this one because the connection was so weak it kept disconnecting and failing. same issue also popped up when trying to test the hub.

When wired up or close to the router I have no issues at all but in these rooms wifi is just completely unusable so where do I go from here and getting a the Wi-Fi pods mentioned in the email?