'90 Day Fiance' Stars' Colon Cancer Fundraiser Shut Down as Doubts Arise

A "90 Day Fiance" couple pissed people off by backtracking on a cancer announcement and seemingly trying to fundraise off it -- something the platform they used shut down quickly.

Here's the deal ... Brandan and Mary Denuccio -- who got hitched after appearing on '90DF: The Other Way' last year -- told their followers over the weekend that Mary had colon cancer ... something they came out with pretty definitively at first, without any doubt.

As part of the announcement -- in which they said flat out that Mary had been diagnosed with colon cancer after experiencing symptoms for years -- they also asked for donations for a fundraiser they started ... which they said would go toward surgery she'd need to remove it.

Soon ... the doubters started coming out of the woodwork and questioning their claim online, which resulted in Brandan and Mary slightly changing the wording of the cancer diagnosis -- making it seem like she hadn't actually gotten any official word from a doctor just yet.

Before long their entire fundraising campaign was halted -- and the whole thing came down.

At the time, the only message that was up on the page read ... "GoGetFunding has been requested or required to stop this campaign." Now, though, we have a bit more clarity.

At first, it was unclear if the campaign -- which, by all accounts, had only raised about $1,300 or so before it was nixed -- was halted by Brandan and Mary themselves ... or the company, but a rep for GoGetFunding tells TMZ ... they're the ones who actually pulled the plug.

We're told the company was quickly flagged by users about the fact it was suspicious -- and after doing some digging on it ... GGF felt enough evidence existed to yank it all down.

Now, in terms of what happened to people's money -- as far as those who donated -- GoGetFunding says the donations were received via PayPal for this campaign ... and no funds passed through their site, so there's no way for them to refund anyone specifically.

GGF goes on to say that they advised anyone who donated and who contacted them afterward for help to dispute any charges/withdrawals with their banks -- and to report any suspicious activity to the police if they felt it rose that level. Unclear if anyone did.

As far as what Brandan and Mary have to say about it all now ... they actually tell us they were the ones who stopped the GoGetFunding campaign because people were inundating them with hate. Mary adds, "I know i announced i have colon cancer. It’s just im so scared that time because i was in pain and i got all the symptoms. But we are still going back and forth to the hospital and have do all the laboratory requested by the doctors."

Mary tells us she's not going to post anymore about this, as she's very stressed right now.