https://youtu.be/sEbUU4Dq98s That's a video of what's connected, if that's helps
That is wrong, you need to unplug the DSL lead going into the home hub, that is why its not working. You will be charged £130 if you have a visit, as the fault is yours.
Which home hub version is that?
You must have plugged that lead in by mistake.
The home hub version is 4, the bt guy years ago set it up like that... I've just removed the dsl cable from the hub and still the same flashing
Reset the HH4 to factory default now. It should not have been plugged into the phone line, as its only an ADSL router.
Its also the top socket that should be connected to the Openrech modem.
I think they may have been pulled out, and someone has plugged the Openreach modem into the bottom instead of the top.
The bottom socket is filtered, and would give a very poor connection, so I am surprised that the Openrech modem connects at all.
How do I factory reset the home hub?
First connect the Openreach modem to the top socket, as described in my last post. I think they have been swapped around by accident.
Top connection to the Openreach box.
No connection to the bottom socket, as that is for a phone only.
Factory reset of the Homehub by pressing a pin into the recess button on the rear for about 20 seconds.