What happens when you unplug the grey DSL cable at the hub?
This is totally weird.
Can you post a screenshot of the hub stats
Advanced settings> Technical log > Information
How about posting the connection stats for the router.
If I un plug the dsl, tor light goes purple
These are images you asked for (I think
Start again. Unplug everything. Remove the powerline adaptor and remove the Ethernet cable from the BTHub. Plug the BTHub' power plug directly into an electrical socket . Make sure you have the cable from the phone socket plugged into the phone socket and the BTHub.
Power on the BTHub. What happens?
You should have a wireless signal.
If you have a device that needs an Ethernet connection plug the Ethernet cable into the BTHub and the other end into the device.