Hi Alf0295
It has been some time since we last spoke, so sorry to hear that you're still experiencing issues with your WiFi still.
I've checked the systems again as it's been some time since we last looked and still aren't able to see any issues with the Hub itself or your connectivity.
Are you able to set up and provide a live link to a broadband quality monitor as advised by jbrennand who responded to you first with steps to try? With this, we'll be able to see if there are any issues affecting the service that aren't showing when we run the checks, such as intermittent issues and patterns.
We also recommend running speed tests through Sam Knows as this will tell you the speeds at the router and the speeds to the device whether it's connected directly through ethernet or via WiFi and we can use this to see what other support we can offer.