Please try the following steps below
■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.
For how to clear cached files and cookies, please refer to [ How do I clear temporary internet (cached) files 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.
○On Windows
○On Android, iOS
■Update your browser
Try updating your browser to the latest version.
■Disable browser add-ons
Try disabling any browser add-ons you have installed (i.e. adblock).
■Reinstall your current browser
Try reinstalling your current browser, as it has been found to sometimes fix the issue.