Please try the following points below.
■Sync your library
Try pressing the [Sync Library] button found on the DLsite Play side menu.
■Clear the browser cache and delete cookies
Cached files and / or cookies in your browser may be corrupted. Please try clearing the browser cache and cookies.
■Reset DLsite Play settings to default
Click the [Reset all settings to defaults] button under [Settings], then try restarting your browser.
* This process will not delete any of your purchases.
■For convenience store prepayment
In the case of convenience store payment, purchases take approximately 5-30 minutes to display in your Library (Purchase History).
■Remove the product from the Hidden Product List
To remove products from the Hide List, go to [Settings] --> [Hidden Product List].