jaytw, something for you to check...
I tried searching today for TPE-YVR. Your search tool gave me J2 for CX 479 on 26 Aug 2023 connecting to CX 888 on 27 Aug 2023. Proceeding forward with the booking, I could not snag these two seats; there was an error message.
I called Cathay, and they said that award availability has only been released up to 24 Aug 2023.
Is there a reason why your tool can see further in advance, or is there an issue to fix?