The Supreme Court has upheld a federal ban of TikTok, and users are scrambling. The ban, which is expected to take effect on January 19, is a looming crisis for the countless small businesses and creators who’ve built their livelihoods on the platform.

In an unsigned opinion, the Court sided with the national security concerns about TikTok over First Amendment rights. There were no noted dissents.

Experts have said the app will not disappear from existing users’ phones once the law takes effect Sunday, but TikTok said it would shut down the platform in the United States by the deadline.