But not if you are a FI without CPL TK for some reason they don't get 945 privileges.
This only aplies to FIs who have the limitation "LAPL only" As there is no revalidation of a LAPL, there is no relevance to 945 privileges.
There are however a nunber of FIs who do not have CPL level knowledge but with grandfather rights and full FI privileges, so there is no reason why they should not have FCL.945 privileges added to their licence.
Tell the CAA they have not added the 945 and request they reissue you licence again. Check of course that the FI was current or it will have transferred to the back of the licence and no 945 would be added.