TikTok ceased operations for 170 million U.S. users on January 19 after a law banning the app due to national security concerns came into effect. The shutdown has caused significant disruption, particularly among younger users. President-elect Donald Trump has suggested he may grant a 90-day reprieve to allow negotiations. Meanwhile, TikTok’s competitors have seen an uptick in activity, while the app’s future in the U.S. hangs in the balance.