Games disappeared from my son's library

Once again I'm having to come here because the terrible in app support chat bot forces me to go in circles! I swear this platform is the worst developed I've ever used. I appreciate this is a community help but the development team (or bots because King Zuckerberg fires humans in favour of AI) need to see how badly they are doing hence the rant above.

I am the parent for my son's account, on the 7th of August 2025 but purchased a game, he tried to play it yesterday and he needs to request it again but it now has a cost of £8.99! Why am I having to pay £8.99 for a game I already paid for last year? The game in question is Kaiju Battle Simulator, screenshot of the store history attached.

Honestly I can't wait for him to grow out of this VR phase and get bored of it, I hate it. Genuinely hate it. The parent child management side of it is ridiculous, it's obvious no one ever consulted an actual parent to test it along the way, gifting is hit and miss, purchases disappear, only 1 parent can manage a child meaning it falls on them to approve things and I can't even remove the restrictions now to give him free access because Meta seem to think they know how to parent my child better than me.