Recently, I noticed that New York was no longer listed as one city on the online redemption system. I tried to make a bogus booking between New York and Singapore on SQ21, with a stopover in Frankfurt on the return (i.e. inbound to JFK), but this was no longer possible! Seats were chronically unavailable for the FRA-JFK sector. Does anybody know why? Is there a way to get around this, since an SQ21-SQ326-SQ26 combination used to be possible.