Hi, I was searching for a flight between MNL to SFO for 10/23/2023 and the system stated that my itinerary qualifies for a complimentary stopover which we would like to take advantage of and the system stated that SIN is the qualified stopover. I adjusted and selected SIN as the stopover and added 10/26/2023 as the departure going to SFO. After determining that the flight was available for two because it allowed me to go the last page that I don't have enough miles to proceed, I then decided to transfer points from my Amex and Chase accounts. After the points showed up in my account, I tried to book the same flights below:Leg 1: 10/23/2023 (MNL to SIN SQ 915)Stopover in SIN for 4 daysLeg 2: 10/26/2023 (SIN to SFO SQ 34) Total miles for 2: 257,000 Business Advantage (includes 1 free stopover) However, after entering the passenger details (for me and my wife) and proceeding to the payment section, the system gave us an error stating "We cannot process your request right now. Please try again later, or get in touch with your local Singapore Airlines office." which I did but they said that they can't resolve the issue because they said that the award is not showing up on their end. After discussing the issue with customer care rep, customer care rep was able to book Leg 1 and Leg 2 separately but told me that I could book them but it will cost more miles on my side because it will not be a stopover anymore but I declined her resolution since I believe that it is not fair for me to pay more because of a system error. I called the US phone number customer care three times and contacted them via chat and no one is able to help me. Any recommendations on what should I do next? Thanks.