Challenges came in tandem with TikTok’s success. U.S. officials expressed concerns about the company’s roots and ownership, ...

Users in the U.S. who opened the app were greeted with a message that read, "Sorry, TikTok isn't available right now." ...

The law that bans the social media application from being distributed in the United States went into effect on Jan. 18 ...

Users were unable to access TikTok Saturday, instead seeing a pop-up message on their screens saying "a law banning TikTok has been enacted." ...