Apple Inc. and Google removed TikTok from their mobile app stores in the US as required by a law that took effect Sunday, after the social media company’s legal challenges failed to head off the measure passed last year to address national security concerns.

The law passed by the Biden administration says it will be unlawful for “an entity,” “marketplace” like a mobile app store, or “internet hosting services to enable the distribution, maintenance, or updating” of TikTok and other ByteDance products.

TikTok stopped working in the US and was removed from app stores due to a new law with its associate apps also affected. Trump hinted at a possible 90-day extension.