within 10 days from:
(aa) the date the Offer becomes or is declared unconditional, if the valid
acceptances are received during the period when the Offer is still conditional;
or
(bb) the date of the valid acceptances, if the valid acceptances are received during
the period after the Offer is or has become or has been declared unconditional.

As stated in the offer document, so, i believe Chin WH is right