TikTok returns for longtime users after a brief shutdown, but Apple and Google app stores keep new downloads on hold amid ongoing national security concerns.

TikTok faces an uphill battle getting back in app stores, even with Trump's executive order that says he won't enforce the TikTok ban for 75 days.

An executive order is an instruction from the president which has the weight of the law behind it. But Trump's order does not overturn the ban. Instead it tells the US attorney general not to enforce the law for now - something experts had expected would be his first move.

TikTok users in the U.S. flurried to social media platform X to complain that the ByteDance-owned app that went dark late on Jan. 18 was still unavailable to download on Apple and Google’s app stores,