It is really weird that BTC ordering is giving so much grief to many travelers even when on SQ issued itineraries.

Itineraries issued on other carriers ticket stock seem to give trouble at times as we have seen reported in this forum before. Oddly though, as shared in the BTC thread, I did not have issues with my LH issued ticket (220- stock) that has two longhaul SQ flights on it, but nothing else. No LH feeders or connector flights or such. A basic LH M&M award ticket with two SQ flights.

I was able to select and save the BTC options for two pax (same PNR) for the two meals (lunch & dinner) of the outbound flight from SIN at the 4 months mark. I guess it's time to buy a lottery ticket, I seem to be lucky here.