By Jessica Ravitz, CNN

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(CNN) - Dealing with a struggling radio business – this wasn’t the way it was supposed to be. By all his calculations, Harold Camping expected to be nearly two years into his Rapture revelry, hanging in heaven with God and the select others who’d been saved.

But when his predicted and vastly promoted May 21, 2011, Day of Rapture came and went, and the end of the world on October 21, 2011, didn’t pan out either, Camping lost his doomsday mojo. It didn’t help that he had another knock against him, having made a similar failed prophecy back in 1994.

By March 2012, the degreed engineer who’s spent more than a half-century studying the Bible admitted mistakes. He vowed to back off from the prediction business.

Now it seems Family Radio, the nonprofit Christian radio broadcasting network Camping started in 1959, may be foundering, according to an investigative story recently published in the Contra Costa Times.

Financial documents show that Family Radio's assets dropped by more than $105 million in less than five years, despite an influx of $85 million in donations over that time, the California newspaper reported. This, of course, was during the big push to spread the news about the end that wasn’t. The paper also said donations have tumbled nearly 70% since May 21, 2011, spawning layoffs of longtime employees. And saddled with loans, a dwindling cash flow and alleged mismanagement, the network was reportedly forced to sell off its three biggest stations.

“You eliminate those three (FM stations) and, ultimately, the rest of it dies,” former employee Matt Tuter told the Contra Costa Times. “I believe they are killing it off.”

All of these financial struggles, however, come as the network grapples with losing the voice of its biggest star - Camping himself. He suffered a stroke in June 2011. And though he remains involved and still serves as the network's president, the flagship show he hosted, "Open Forum," is only running previously recorded programs.

It was through Family Radio – and its multitude of U.S. stations, satellite feeds, shortwave radio use, Internet reach and translation machine – that Camping’s teachings and 2011 predictions spread across the globe. His doomsday message was bolstered by a massive billboard campaign at a reported price tag of $5 million. There were also initiatives like Project Caravan, which dispatched teams of volunteers in RVs to warn the people.

CNN hopped on board one caravan and traveled with faithful ambassadors who’d given up everything for this cause.

The coordinator for Project Caravan, Ted Kim, left Family Radio soon after May 21, 2011. Once his ambassadors - still around and not raptured - had a place to go, he told CNN, his work was done.

Even though he doesn't work there anymore, that doesn’t mean he’s lost faith in the mission. He still believes spiritual judgment occurred in 2011 and that the world’s physical destruction is near.

Photos: Doomsdays throughout time

Kim, who is now home schooling his children and caring for his mother, suspects the supporters who fell away had erroneously put more stock in Camping than they’d put in the Bible or God himself.

But Tuter, the former employee who served at Camping’s side for years before he was fired in 2012, suggested to the Contra Costa Times that a demise of Family Radio may be deliberate. He said Camping made it clear to him in 1996 that he wanted the network to die when he did.

"He was very specific he did not want it to continue," Tuter told the newspaper. He said Camping confided in him a week before going into heart surgery: "God raised up Family Radio just as a platform for me!"

Tom Evans, who has taken over the network’s day-to-day reins since Camping suffered that stroke, could not be reached by CNN for comment. But he offered the newspaper a very different perspective than Tuter's. Evans said he hopes that Family Radio can move forward, leaving this end-of-the-world banter behind it.

“We want to be a comfort and reminder of God’s strength and mercy,” he said. “In the end, our founding mission is to proclaim the word of God.”

That mission, coupled with the network’s recent history, may not make them boom like they once did. But to Evans and those who are keeping the faith, neither should it portend doom.