Are you able to provide an estimated date for when the option to disable UPnP will be made available?
I find it baffling that TalkTalk would remove the option while knowing the security issues associated with UPnP. I also know for a fact that my old TalkTalk router (HG633) did have option.
In the following post (https://community.talktalk.co.uk/t5/Broadband/Switch-off-UPnP-on-Sagemcom-FAST-5364-router/td-p/2442...), the products team did indeed disable UPnP, can you please confirm the steps I need to follow in order to have the option disabled on my router.
After logging in to the router web interface, press F12 for a console and copy in the following before pressing enter to disable UPnP:
Or the following to re-enable UPnP: