But TikTok may not be gone for long. The company suggested it could be back soon – perhaps as early as Monday.

“We are fortunate that President Trump has indicated that he will work with us on a solution to reinstate TikTok once he takes office,” the company posted in its pop-up message to users who opened the app beginning late Saturday night. “Please stay tuned!”

President-elect Trump said he will “most likely” delay a ban on TikTok for 90 days after he takes office on Monday, adding that he has not made a final decision in a phone interview with NBC Newson Saturday.

“I think that would be, certainly, an option that we look at. The 90-day extension is something that will be most likely done, because it’s appropriate. You know, it’s appropriate. We have to look at it carefully. It’s a very big situation,” Trump said in the interview.

“If I decide to do that, I’ll probably announce it on Monday,” he added.

The blackout from TikTok — and the suggestion that it could soon restore its service — is the latest twist in a saga that’s dragged on for months, leaving the fate of the app in limbo.

The app also has disappeared from Apple’s App Store and the Google Play store. And other apps owned by TikTok’s parent company, ByteDance – including CapCut – also displayed a similar message Saturday night.

Lawmakers said TikTok’s ties to China and its access to reams of data posed a threat to national security.

Many US users told CNN they were bracing for an end to the app, including influencers and other small businesses that said they depended on the platform for a living. Still, they said, they held out hope the app would somehow be saved.

But the Supreme Court’s decision dashed hopes of a last-second judicial assist.

Some of the companies that operate app stores and run computer servers are said to be concerned that they will be held liable for violating terms of the ban. Those service providers pledged to stop carrying the app to avoid legal consequences, a person familiar with companies’ discussions told CNN.

Meanwhile, Trump — who first warned of TikTok’s dangers five years ago — is now casting himself as the app’s savior. Earlier this month, on his Truth Social account, he posted stats about his own popularity on TikTok and asked, “Why would I want to get rid of TikTok?”

TikTok’s CEO Shou Chew has met with Trump at his Mar-a-Lago home in the weeks leading up to the ban taking effect and is expected to attend Trump’s inauguration on Monday.

TikTok did not immediately respond to a request for comment late on Saturday.

A 90-day extension?

The law passed last year allows the president to delay the ban from going into effect by 90 days but requires evidence that parties working to arrange a sale of TikTok to a US-owned company have made significant progress.

But TikTok’s owner, ByteDance, has rejected would-be buyers. The company has cited its popularity among American users, and its value to small businesses across the country, as it fights to stay online without any change in ownership.

After the Supreme Court ruled, 9-0, to uphold the ban, White House press secretary Karine Jean-Pierre signaled the administration wouldn’t enforce the law on Biden’s final day in office.

Due to the federal holiday weekend and the inauguration, “actions to implement the law simply must fall to the next administration,” she said.

But TikTok wasn’t satisfied by that statement. According to a person familiar with the matter, some service providers — companies like Google and Apple that would face exorbitant fines for allowing US access to TikTok once the ban takes effect — told TikTok they believed they were vulnerable under the law starting Sunday.

A person close to TikTok says “multiple critical service providers” indicated to TikTok that they would no longer carry the app or its data, which forced the app offline. The service providers cited fears that the ban might be enforced starting Sunday, despite the Biden administration’s signals to the contrary.

So TikTok took action to take the app down – at least for now.

The tmove, and the pop-up naming Trump, could put even more pressure on the president-elect to negotiate a solution in the days or weeks to come.

TikTok employees were also told by the company on Saturday that the situation was “disappointing” but that the company was working on a solution.

“We know this is disappointing for you not only as employees, but as users. However, we are fortunate that President Trump has indicated that he will work with us on a solution to reinstate TikTok once he takes office. Please know our teams are working tirelessly to bring our app back to the U.S. as soon as possible,” read the message to employees.

A White House source reiterated to CNN that there will not be any fines by the Biden administration associated with keeping TikTok active on Sunday.

At the same time, however, some Biden officials are content with TikTok going dark for a day, since the law was passed with strong support from both parties.

The decision “is going to be made by the next president anyway,” Biden told reporters Friday.

TikTok’s final minute

On Saturday, the White House called TikTok’s warning about going dark a “stunt.”

“We see no reason for TikTok or other companies to take actions in the next few days before the Trump administration takes office on Monday,” Jean-Pierre said. “We have laid out our position clearly and straightforwardly: actions to implement this law will fall to the next administration. So TikTok and other companies should take up any concerns with them.”

A TikTok spokesperson had no immediate reaction to the statement from the White House.

The company said it expected service providers — like companies that operate servers full of videos — to restrict access to the app at 12:01 a.m. ET on Sunday.

On Apple and Google’s app stores, the most popular free apps for the past week have been TikTok-like apps, including two that are also owned by Chinese companies. One of them, photo-sharing app Lemon8, is owned by ByteDance, just like TikTok. But Lemon8 may have the same fate as TikTok in the future.

Given Trump’s public remarks about TikTok any blackout may not last long.

Trump is said to be considering issuing an executive order that could effectively pause the ban and provide some time to sort out a long-term solution.

But he will face pressure from multiple directions. Some Republican senators, like Josh Hawley of Missouri and Tom Cotton of Arkansas, remain strongly supportive of the ban.

“ByteDance and its Chinese Communist masters had nine months to sell TikTok before the Sunday deadline,” Cotton wrote on X. “The very fact that Communist China refuses to permit its sale reveals exactly what TikTok is: a communist spy app.”

Analyst Richard Greenfield of LightShed Partners, who has long followed the TikTok saga, anticipates that TikTok will ultimately stay online in the United States.

On Saturday, Perplexity AI, a San Francisco-based AI search-engine startup, confirmed to CNN that it submitted a bid to ByteDance to merge with TikTok.