The official Facebook page to help in the global search for missing Madeleine McCann was shut down on Suinday night following "hateful" messages posted by online trolls.
In a post, the webmaster of the "Official Find Madeleine Campaign" page said they needed to "take a break" and "clear" their head.
They wrote: "The trolls and the media encouraging them with false stories are taking a toll on my mental health. Be back in a few days."
The Facebook page, endorsed by Kate and Gerry McCann, has almost 600,000 'likes' and is followed by over 560,000 people.
The page went back online on Monday afternoon.
However, the webmaster warned that the page will keep being unpublished if trolls continue to post hateful messages.
They wrote: "I have turned the page back on for now, but will continue to turn the page off if we receive hateful posts. I need to do this for my own mental health.
"I would also like to set the record straight on how this page is managed. In late 2007, I urged Gerry and Kate to have a page setup on Facebook. I setup this page and have run it ever since.
"The only posts that Gerry and Kate see are the ones I send to them. They do not use social media.
"When I do post on their behalf, I ALWAYS sign their name(s) to the post. If a post is from me, I sign my title. I do not bother Gerry and Kate with the day-to-day operations of this page. I do not coordinate with them posts or get approval.
"They trust me to run this page, our Web site and other social media accounts. If a post has my title on it, it's my words, thoughts or feelings. No one else's."
The post finished with: "Thank you for keeping the page positive and hopeful," and was signed, FM Webmaster.
The Facebook page was created in 2007 - the same year Madeleine disappeared from the McCann's holiday apartment in Praia da Luz, Portugal.
Madeleine would now be almost 14-years-old.