Some users saw the social media app come back online on Sunday, following a shutdown when a federal law went into effect requiring a sale or ban.

Advisers to Donald Trump have discussed having the incoming president sign an executive order to “save” TikTok shortly after he’s sworn in Monday in the Capitol Rotunda — in the presence of the video app’s chief executive as well as lawmakers who backed legislation to ban the app as a national security threat.

Donald Trump pledged Sunday to delay enforcement of a national security law that threatened to ban TikTok, but it’s not clear that the app’s Chinese parent company has satisfied the requirements necessary to extend the deadline to find a possible buyer and avoid a permanent shutdown.