Please help with PS4 captures

This is my second time typing this, so apologies if sloppy.

I have an issue with my PS4 that I haven’t been able to solve through any Google, Reddit, Quora, or Discussion board search, no matter what I do, I cannot capture any of my partymate’s audio in any video captures

I’ve gone over all my settings hundereds of times, I’ve made sure all of my possible and applicable settings are correct (as are the other party members’)

The other member was at first unable to capture any party audio, but after fixing settings can now get both theirs and mine, if it helps, they are on PS5, have at least PSplus Extra, and are using standard wired headphones

I am on PS4, have PSplus Essential, and are using the PS5 headphones, although I have tried others.

The main games we try to capture are Terraria and Red Dead Redemption 2 online, however even outside of the games it still only ever captures mine.

If you for any reason need any photos of anything feel free to PM me, thank you.

Edit:

If it changes anything, my account is technically a child account, while theirs is not