I finished an identical repair to this at around the time you posted, and yes, stupidly long wait times to get through to the DCoE fibre team this morning.
So I now have an ONT in the cupboard under my stairs! Yay! But unfortunately it doesn't actually connect to anything because the cable out the front of the house is still spooled up and not going anywhere.
My address also still doesn't show any products available to order. Anyone know how long it usually takes for DSL checker to show WBC FTTP as available after the ONT is installed?
They're meant to be blowing the fibre today, so fingers crossed I'll come home to the physical side of the installation being complete tonight and then it's just waiting for the update to the DSL checker so that Plusnet can get me activated!