Hi @skaboss241 thanks for getting in touch. I can see when viewing your story that some pages have working audio while others don’t. Are the pages with working audio M4v as you have mentioned above or MP4?
Could I also ask if you currently have the video optimization setting switched on? You can check this from Stories > Settings > Video Optimization.
If possible it would also be useful if you could provide some of the files that are currently not working so that we can test these ourselves. You can share these via a Google Drive link.
It would also be useful to get your Site Health Information privately via this form so that I can check everything looks okay from a setup perspective.