With the current RPG sale running, I looked to see if there were any games worth thinking about buying.
I noted NWN EE:DDoF as a new DLC adventure to definitely get, and NWN EE itself being up for sale, again.
I then continued through the on sale list, through to what I already have.
Missing from that part of the list, was what I know I bought a copy of back in February 2020 in the WE LOVE GAMES SALE, NWN EE DDE.
Checking my games library, it says I own a copy of NWN EE.
Checking the store page for NWN EE, that says 'Add to cart', or 'Wishlist it'. Not 'Buy as a gift'.
I think that GOG, when they removed NWN EE DDE from the store, fouled things up.
GOG removed the store page for DDE in its entirety, instead of keeping it place for existing owners, but blocking access for everyone else.
Then, GOG didn't true things up, so people who bought a copy of DDE, and through that have all the then current DLC, didn't get NWN EE itself added to their store 'In library' list, despite EE appearing in their actual games library.