We have put together a short survey to capture your feedback in terms of what BT can do when you experience home Wi-Fi issues. We would appreciate it if you could take a couple of minutes to complete a short survey. Read more from here, Fix my home Wi-Fi
as I posted already you posted stats with stable 8 days connection so problem is wireless connection not internet connection
have you tried using wifi analyser on phone to see networks near you and channels in use? you can the select a free channel or less congested channel where your hub wifi is strongest I would not use channel 36 if you have SKY Q
have you also tried changing the wireless modes from 1 to either 2 or 3?