Instagram users have told the BBC of the "extreme stress" of having their accounts banned after being wrongly accused by the platform of breaching its rules on child sexual exploitation.
The BBC has been in touch with three people who were told by parent company Meta that their accounts were being permanently disabled, only to have them reinstated shortly after their cases were highlighted to journalists.
"I've lost endless hours of sleep, felt isolated. It's been horrible, not to mention having an accusation like that over my head," one of the men told BBC News.
Meta declined to comment.
BBC News has been contacted by more than 100 people who claim to have been wrongly banned by Meta.
Some talk of a loss of earnings after being locked out of their business pages, while others highlight the pain of no longer having access to years of pictures and memories. Many point to the impact it has had on their mental health.
Over 27,000 people have signed a petition that accuses Meta's moderation system, powered by artificial intelligence (AI), of falsely banning accounts and then having an appeal process that is unfit for purpose.
Thousands of people are also in Reddit forums dedicated to the subject, and many users have posted on social media about being banned.
Meta has previously acknowledged a problem with Facebook Groups but denied its platforms were more widely affected.
'Outrageous and vile'
The BBC has changed the names of the people in this piece to protect their identities.
David, from Aberdeen in Scotland, was suspended from Instagram on 4 June. He was told he had not followed Meta's community standards on child sexual exploitation, abuse and nudity.
He appealed that day, and was then permanently disabled on Instagram and his associated Facebook and Facebook Messenger accounts.
David found a Reddit thread, where many others were posting that they had also been wrongly banned over child sexual exploitation.
"We have lost years of memories, in my case over 10 years of messages, photos and posts - due to a completely outrageous and vile accusation," he told BBC News.
He said Meta was "an embarrassment", with AI-generated replies and templated responses to his questions. He still has no idea why his account was banned.
"I've lost endless hours of sleep, extreme stress, felt isolated. It's been horrible, not to mention having an accusation like that over my head.
"Although you can speak to people on Reddit, it is hard to go and speak to a family member or a colleague. They probably don't know the context that there is a ban wave going on."
The BBC raised David's case to Meta on 3 July, as one of a number of people who claimed to have been wrongly banned over child sexual exploitation. Within hours, his account was reinstated.
In a message sent to David, and seen by the BBC, the tech giant said: "We're sorry that we've got this wrong, and that you weren't able to use Instagram for a while. Sometimes, we need to take action to help keep our community safe."
"It is a massive weight off my shoulders," said David.