Your mailbox might be still on the email you received, if so, click to go back to the inbox and you should have an email with a code on it.
Efallai y bydd eich blwch post yn dal i fod ar yr e-bost a gawsoch, os felly, cliciwch i fynd yn ôl i'r mewnflwch a dylech gael e-bost gyda chod arno.