The actress Rose McGowan, who was one of the first to speak out about Harvey Weinstein’s alleged sexual assaults, was temporarily limited from using some Twitter features.
Twitter locked her account for 12 hours for “violating” its rules.
The social media company has since said it was because “one of her tweets included a private phone number”.
McGowan was named in a New York Times article revealing decades of sexual harassment against young actresses.
The limit meant she couldn’t tweet, retweet or like posts, and could only send direct messages, but Twitter said her account has now been unlocked and the relevant tweet was deleted.
In their message to McGowan, Twitter said it would reactivate her account if she deleted tweets which violate their rules.
Twitter has now confirmed that publishing a private phone number was a breach.