Hi @Funky-Gibbons
First off there is a more high-tech solution than using electrical tape over the light, you can just turn it off in the UI, by going to:-
Dashboard > See internet settings > Manage advanced settings > TalkTalk Wi-Fi Hub 2 > Device Info > Light Control
Now to your log - it has been full of these entries prior to Wi-Fi Optimisation being disabled:-
WiFi security settings have been successfully saved
This is quite normal to see this entry when any WiFi parameter (e.g. a channel change) has occurred because you manually did this in the router. Whenever this happens all WiFi devices on that band (2.4 or 5GHz) temporarily lose connection with that band. However, this can be seamless when done on just one band, if the device is dual-band, it will just connect to the other band.
However, sometimes as in your case, it seems that with WiFi Optimisation enabled, the optimisation process can be very aggressive, changing WiFi parameters on either band quite frequently. This can be seen as many repeated entries of this in the log. If you look back to the 22/11/2023 for instance, this happened around 42 times in that day, including four times at 19:02.
Now I don't know if this is the cause of the flashing light, but it is the cause of interrupted Wi-Fi connections.
Why is Wi-Fi optimisation doing this, in the vast majority of cases it doesn't do this at all. I hardly ever see entry in my logs & optimisation is enabled in my router. I can only presume it is down to Wi-Fi signal quality in your local area changing frequently at certain times of the day & Wi-Fi optimisation keeps trying to rectify this.
