The federal ban on TikTok is set to take effect Sunday after the Supreme Court upheld the law Friday, and while reports Wednesday suggest President-elect Donald Trump is mulling an executive order that would quickly reinstate the app,

NBC News reports that TikTok has boosted advertisements for Lemon8, an application also owned by ByteDance, in recent days. Rival social-media apps and websites such as Instagram, YouTube, and Snapchat are expected to increase their user base in the wake of a possible ban.

The app’s availability in the U.S. has been thrown into jeopardy over data privacy and national security concerns.

TikTok is set to be banned tomorrow. Here's what time the ban could start in the U.S. and what the app could look like for users trying to access it on Sunday.

TikTok’s app was removed from prominent app stores on Saturday just before a federal law that would have banned the popular social media platform was scheduled to go into effect

Like tens of thousands of content creators who make their living through social media, local creators are in jeopardy of losing their most successful platform if the U.S. government follows through on its ban of the app.

Even if temporary, the unprecedented shutdown of TikTok will have an impact on U.S.-China relations, domestic politics, the social-media marketplace and millions of Americans who depend on the app.

The decision came a week after the justices heard a First Amendment challenge to a law aimed at the wildly popular short-form video platform used by 170 million Americans that the government fears could be influenced by China.

Unless TikTok’s China-based parent company, ByteDance, sells the app into new ownership, TikTok will be removed from Apple and Google app stores on Sunday, Jan. 19, reports CNN. The app will still be accessible on phones that have it previously downloaded, but it will not be able to update.

Here’s everything you need to know about TikTok: when it will go dark, whether Trump can save it, who might buy the app—and how to get your TikTok tombstone.

The app’s availability in the U.S. has been thrown into jeopardy over data privacy and national security concerns.