I got this exact same rejection on my macOS build of a SwiftUI App.
I added the following to the AppDelegate (replace the url with your website) and it passed no problem.
override func buildMenu(with builder: UIMenuBuilder) {
super.buildMenu(with: builder)
builder.remove(menu: .services)
builder.remove(menu: .format)
builder.remove(menu: .toolbar)
}
@IBAction func showHelp(_ sender: Any) {
UIApplication.shared.open(URL(string: "https://www.yourwebsite.com")!)
}