should I click "mark voucher as used" after redeeming vouchers from samsung pay?

[xrchr]

I joined the galaxy buds mission day giveaway and I don't know what else to do after redeeming the voucher 

[MangoTango]

As wat I know is we no need to do anything until the winner announcement date. I think better don't click "Mark as used" also.

[nazzzz]

no need