The social media platform TikTok became unavailable for some users Saturday evening, with a popup message saying “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. We are fortunate that President Trump has indicated that he will work with us on a solution to reinstate TikTok once he takes office. Please stay tuned,” the alert continued.

The Supreme Court on Friday upheld a law set to ban TikTok unless the platform severs ties with China-based parent company ByteDance by Sunday.

The Biden administration said it wouldn’t enforce the ban before Donald Trump takes office on Monday, but the social media company said it needed more “definitive” assurance from the federal government to stay online.

Trump told ABC News in an interview Saturday he is likely to grant TikTok a 90-day extension to avoid a ban in the United States.

This is a developing story. Please check back for updates.