It's more complicated than that. If I do a search for Redeem Points (while logged in and having points; dunno if that matters) around Stockholm for very close-in dates, I get nothing available. If I go out two weeks to two months (for example, the night of April 1), I still get nothing available except this one (apparently new?) property (out of 16):
Yasuragi, an Ascend Hotel Collection Member
Hamndalsvagen 6, Saltsjo-Boo, 13281, SE
6.31 mi / 10.16 km
(0 Reviews)
Featured Amenities: High Speed Internet, Hot Breakfast, Smoke Free
20,000 PTS OR 6,000 PTS + $105 Per Night
(I'm glad I tried Stockholm first, or else I might have thought that no properties were ever returned. I just tried both Bergen and Oslo in Norway, and go zero properties available two months out.)
If they had taken away the ability to book Rewards Nights at Nordic Choice hotels, there wouldn't be this one exception. So I think it's something else, whether it's yet another website glitch or whether someone forgot to load the availability calendar from Nordic Choice to Choice International or what.
The fact that only a very new (?) property seems to be showing implies
perhaps that some data didn't get loaded from Nordic Choice to Choice International, but that since this property was new it had to send that data separately, and that's why it's the only hotel that Choice International knows availability for.