Coco Gauff wrote "RIP TikTok USA" and drew a broken heart on a camera lens shortly after reaching the Australian Open quarter-finals on Sunday after the popular app used by 170 million Americans stopped working in the United States.

Coco Gauff said she hopes TikTok "comes back" in the U.S. after the federal ban of the popular app took effect Saturday.

American tennis star Coco Gauff mourned the loss of TikTok's app back home, writing on a TV camera lens “RIP TikTok USA” and drawing a broken heart right after winning a match at the Australian Open to reach the quarterfinals.

Washington — The Supreme Court on Friday upheld a new law that would lead to a ban of the social media platform TikTok, clearing the way for the widely popular app to shutter in the U.S. as soon as Sunday.

The Supreme Court upheld a law that requires TikTok's Chinese owner to sell off the app's U.S. business or face a nationwide ban Sunday.

Marvel Snap has now been banned in the US alongside TikTok, thanks to an association with the social media platform's parent company ByteDance, catching players off guard.

TikTok’s app and website effectively shut down in the United States late Saturday just before a nationwide ban against the video-sharing platform came into force. The company showed its millions of American users a pop-up message that thanked President-elect Donald Trump for indicating he will work with the company on a solution when he takes office on Monday.

TikTok users woke up to an unsettling message on the app: "Sorry, TikTok isn't available right now. A law banning TikTok has been enacted in the U.S. Unfortunately, that means you can't use TikTok for now.