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

App executives had discussed taking the platform offline on Sunday to highlight the impact of the restriction, but the plans had not been final.

The app had more than 170 million monthly users in the U.S. The black-out is the result of a law forcing the service offline unless it sheds its ties to ByteDance, its China-based parent company.