How do you get charity case to work on ps4?

It's long but maybe something in here will help

https://support.playstation.com/s/article/PS4-Trouble-With-Downloadable-Content?language=en_US
This article is to help troubleshoot issues with downloadable content on the PlayStation 4 (game won’t start, title locked, download button missing, or game won’t load).
Restore PS4™ Licenses
This process will help restore the licenses for all your games and add-on content you have purchased.
Step 1: Log into the PSN Account that purchased the content in question.
Step 2: Go to Settings > Account Management, and select Restore Licenses. Click OK when done.
Step 3: Go to the PS4™ Library > Purchased and select the game in question.

For games, select [Download] to start the download process.
For downloadable game content (add-ons, themes and avatars), select [PlayStation Store] to find the digital content in question. If the content has already been downloaded it will display [Purchased]. Add-on content for games may have in-game requirements or milestones in order to be unlocked. You may need to check with the publisher of the game to understand how to access in-game content.

Step 4: Once the download is complete the game will appear on the home PS4 screen.

Delete and Download the Game Again
Step 1: Go to the PS4™ Library, select Purchased.
Step 2: Highlight game or digital content you want to delete, press the Options button on your controller to open the menu. Select Delete. This will delete the downloadable content but will not delete saved game data.
Step 3: To re-download > Go to the Library, select Purchase, then Download to reinstall your game. For downloadable game content (add-ons, themes and avatars), you may need to highlight and select the PlayStation Store to find and download any additional content in question.

Deactivate and Reactivate the Your Primary PS4™
Step 1: Go to Settings and select Account Management.
Step 2: Select Activate as Your Primary PS4, then Deactivate then Reactivate.
Step 3: Once complete, try accessing the game or digital content again.

Download Games by Freeing up HDD Space
While the PS4 should automatically let you know when your HDD storage is full, it may be worth taking a look if you are having difficulty downloading games.
Step 1: Go to Settings > Storage to see if you have enough HDD space to download the content in question.
Step 2: If not, select System Storage and delete content to create enough space to allow download.

Restart the game and just wait for a bit, they'll appear eventually. DBD dlc are weird on ps4 it doesn't show you any notifications.