Is this a single player World and did you shut down the Playstation Improperly at some point? It could be a corrupt World, unless you mean that you're trying to upload a World and it's not working. ^TK
Usually when this happens you need to log out of the device (If you have single player worlds this will delete them) sign all the way out of your microsoft account, install, sign back in and it should show back up! ^TK
Is your account migrated over to a Microsoft Account or are you still using a Mojang account? Let me know and I'll get you escalated over to the correct team. ^TK
Not sure why it's not working to be honest and troubleshooting marketplace items can be very fickle. If you have already tried downloading it and reinstalling it and it still isn't working I would reach out to Playstation support for assistance. ^TK
Are you able to try and download it through a hardwire connection to see if that helps in the matter? I want to rule out corrupt data (Which I doubt) but better to check it oiut thaen rule it out. ^TK
When you're seeing demo mood it's usually a sign that they are not signing in with the correct credentials. Are they migrated to a Microsoft account by chance? ^TK
To keep your information secure, please complete our request form at aka.ms/Minecraft-Support so we can quickly and safely assist with your question! ^TK
No worries, let's try to get this resolved! Have you reached out to Microsoft Support as of yet to see if you're able to download it with their help? ^TK
Can you grab me a screenshot of the error you're seeing? I can shoot it over to my tech team to see if we can find a resolution here without having you submitting a ticket. ^TK
Please visit our bug report site to see if the problem has already been reported: bugs.mojang.com. You can upvote if the issue hasn't been resolved. If you think you've found a new bug, visit our help site here on how to submit a report! aka.ms/MCBugTrackerHelp ^TK
We're unable to comment on any future updates or features that are not publicly known at this time. All available info on game updates can be found in this FAQ: help.minecraft.net/hc/en-us/… ^TK
I'm not seeing any other players at this moment with this issue but that doesn't mean it isn't happening! Have you talked to any of our tech team to look into this as of yet? ^TK
I would suggest trying to send this account information through a different browser to see if that assists in the matter. Unfortunately, our troubleshooting is very limited if this does not work. ^TK
In this case, please have her complete our request form at bit.ly/3uO21ER so that one of our account specialists can look further into this issue with her. ^FF