Hi Cabusick,
Thanks for visiting the Apple Support Communities.
If you are trying to send an audio message from within the Messages app, they will expire either after 2 minutes, 1 year, or Never, depending on your iOS version and settings. You can check which setting you have for this under Settings > Messages > Audio Messages, and can get more information in the Apple Support article Send and receive messages on iPhone - Apple Support.
If that is not what is happening, please don't hesitate to respond back with the following information. These details will help us ensure we take the best path forward:
- What is the exact iOS version number listed under Settings > General > About?
- How are you trying to share the message/Voice Memo?
- Can you ask the person it is being sent to whether they've received it, or can you test by sending yourself a message? If so, let us know the results.
Best!