Yes, it's sorted now.
I had uploaded a copy of his birth certificate, and also linked to the CWGC page for his death, thinking that was what I had to do and that "someone" would come along behind the scenes from IWM and put the details onto his profile. Wrong!
The first bit was right (upload copy of birth certificate and link to CGCC page for his death), but then I should have clicked on "Add to Life Story" and then "Add facts from Evidence", used the info from the birth cert and then clicked save, then repeated for the CWGC link.
Now his profile shows (under his name) his date of birth and date of death.
Hope this helps.
STG