9A.—(1) Any person who has made an application for a certificate of entitlement during any period specified in the public notice as an open bidding period may apply to increase the proposal amount at any time before the end of such period.
(2) An application to increase the proposal amount (referred to in this rule as the relevant application) shall be made in such manner as the Registrar may determine.
(3) The Registrar may, in his discretion —
(a)
impose a fee, of such an amount as he may determine, for a relevant application; and
(b)
deduct the fee for a relevant application from the deposit paid by the applicant under rule 7(2).
(4) A relevant application made in respect of any application for a certificate of entitlement shall be treated as valid if it has been authenticated with an authentication code issued to the applicant, or with a personal identification number issued by the bank with which the relevant application is lodged, or with both, as the Registrar may require.
(5) The Registrar may reject any relevant application without assigning any reason.