Filipino singer Ivy was seen making it through to the Six Chair Challenge on Sunday night's episode of The X Factor (18 September), but it has since been reported that she has had to quit.
According to The Sun, Ivy was not granted a visa to travel to the US for Sharon Osbourne's Judges' Houses.
Sharon held her auditions at her home in Los Angeles last week, but Ivy was apparently unable to go.
A source told the newspaper: "She was point blank refused the visa. The X Factor tried their best to help, but ran out of time." Reveal has contacted The X Factor.
Simon Cowell had previously described Ivy as "one of the best we've ever had".
Meanwhile, during Sunday's episode, the judges each found out which category they have. While Sharon has the Overs, Simon has the Girls, Louis Walsh has the Groups and Nicole Scherzinger has the Boys.
Next weekend's episodes shows the judges whittle the contestants down again in the Six Chair Challenge.