Two points:
Farelock indeed does not work for codeshares, but if you tried to ticket a held flight and they took you're money, they're on the hook for trying to book it at the price they quoted.

Second, I've found that for some reason reservations with SK tend to take much longer to ticket than any other carrier I've used. It's been almost a full 24 hours (or maybe even a bit longer) for a paid ticket and almost 48 hours for an award ticket. These are data points for flights to/from CPH that I've booked in the last month or two.

Have you tried calling? An agent who can actually look at your reservation might be much more helpful than the FT community at this point.