Where, under these Regulations, any person is to do any act or thing or any document or evidence is required to be produced or filed and it is shown to the satisfaction of the Registrar—
(a) that for any reasonable cause that person is unable to do that act or thing; or
(b) that the document or evidence cannot be produced or filed,
the Registrar may, upon the production of such evidence and subject to such terms as he or she thinks fit, dispense with the doing of any such act or thing, or the production or filing of such document or evidence.