Join the official discord server if you haven’t already. The link can be found on Settings > Account > Discord.
Go to the #Free-talk channel
(On PC) Click the Threads icon on the top.
(On Mobile) Tap the channel name, and tap the Threads icon on the top.
Join the “Codes Thread” thread.
Try the codes without a red “❌” reaction. They might still be valid. If they are expired, react to them with the “❌” emoji.