Hello Cue,
If you want to quickly clear the black screen and see if you can get it to display upright, try this workaround:
The Rotation Toggle Method: While looking at the black screen, rotate your device into landscape mode so the game table loads. Once the table is visible, rotate it back upright. On many mobile browsers, this forces the layout engine to recalculate the canvas size and will make the black screen disappear.
Check Browser Zoom: Ensure you haven't accidentally zoomed in or out. Pinch-zoom can sometimes cause the game container to glitch and dim or black out. Try pinch-zooming all the way out back to normal 1x scale.
Clear Your Cache (Select "All Time"): Corrupted temporary files from site updates can break responsive scripts. Try clearing your mobile browser's cookies and cache, then reload the page.
I hope this resolves the issue for you.
Kind regards,
John