I have written to both the hotel (IC Singapore) and the IHG Customer Care Centre on this. IC SIngapore suspected that it is a system glitch and will revert to me with the findings within the next 2 days. IHG Customer Care Center closes the case by crediting the points. Email is appended below. Given that this is an adjusted stay, this did not trigger the "Stay in AMEA for up to 71K points" bonus points. I will see if this trigger an update of the Accelerate Promotion stay update.

Hello there, <hclee01>!

Hope you're well.

My name is IHG and I'm pleased to assist a valued Spire Royal Ambassador member like you with your account inquiry.

First, I'd like to apologize for the delay in response as we are currently experiencing high email volume than normal.

I'm sorry for the inconvenience this matter has caused you. I reviewed your stay in question and made some adjustments. You earned 18,964 points and your current point balance is XXX.

Thank you for choosing our hotel. Should you need further assistance, you can reply to us and we'll be glad to help.

Take Care!