The 16-year-old joined the site a month ago and since, Katie has faced backlash for “making Harvey a target for trolls”.
Katie, 40, set up the account for him after fighting for online hate on social media to be made illegal in Parliament.
Following her battle at the House of Commons, Katie made the account and told her 1.9million followers to go and follow her son.
But now the account has disappeared and according to The Sun, a representative for Katie said her team are trying to figure out what has happened to it.
The representative said: “No it’s not been deleted. We’re trying to figure it out ourselves.
“We don’t know if it’s been hacked or that Instagram have removed it.”
Since Harvey’s Insta disappeared it appears the same may have happened to Katie’s official Facebook page, which boasted 2.3million fans.
Instead of the page appearing, a warning pops up which reads: “This page isn’t available.
“The link you followed may be broken, or the page may have been removed.”
“Did you notice your Facebook has been hacked or something? They blocked me for saying so”
The former glamour model’s own Twitter and Instagram accounts are still working, but she has not posted on either since yesterday.
Concerned fans rushed to Katie’s Instagram to warn the babe, with one writing: “What happened to your Facebook page?”
Another said: “Did you notice your Facebook has been hacked or something? They blocked me for saying so.”
Daily Star Online has contacted a representative for Katie for comment.