2FA Backup Codes Expired

Still have access to account to be able to post on feedback. (there's an oversight).

Have had account created since Mar 2018, with original backup codes screen-shotted and stored in a cloud photos app. Purchased discord nitro in Feb of 2021 and other months. Have purchase receipts.

Anyways, long story short. Never re-created new backup 2FA codes, still have originals that of the 10, I've used 4 or 5. Now with backup codes I know are still valid I can not log into account. I've requested from support to see if Backup Codes can expire and I have yet to get a response. Now to the point support is no longer responding to ticket responses.

Anyways, id like to request to see if code from 4+ years ago do expire.