https://r2.community.samsung.com/t5/Galaxy-S/Samsung-S23-Pre-Reserved-5K-Voucher-Update/td-p/13534016?src=ShareByUserCMCheck this as well @dragonashish
Please let me know how it goes, I've reached out as well. But as per the t&c looks like we won't be able to avail it. They told me to cancel and place an order again, I said no.