The Supreme Court on Friday was divided over the constitutionality of a federal law that would require social-media giant TikTok to shut down in the United States unless its Chinese parent company can sell it by Jan.

Justices did not issue a ruling in the closely watched case over a potential ban, dialing up intrigue over the app’s fate.

TikTok reportedly will shut down the app in the U.S. unless the Supreme Court halts a law banning the app unless ByteDance divests its stake.