If you are using [Safari Browser] on an iPhone, please check the following.
■ JavaScript settings
Please be sure to enable it.
iPhone > [Settings] > [Safari] > [Details] > Enable JavaScript
■About private browsing mode
If "Private Browsing Mode" is set,
You may not be able to view the video, so please watch in normal mode.
When private browsing mode is "on", the top and bottom of the screen will be black,
When it is set to "Off", the top and bottom of the screen will turn white.
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*You will be redirected to the Apple Support page.
■ About "Content Blocker" settings
If you are viewing the site from Safari, you may have a "content blocker"
If it is set to "ON", playback may not be possible.
If you have installed the dedicated app, please try playing with the setting set to "OFF".
■ How about using a different browser?
Please try playing it on Google Chrome.
■ Communication environment
Please play in a location with good signal strength (Wi-Fi environment).