Trouble with else if body execution in c++ program

I'm working on a simple shell game program in C++. One of the requirements is that the user gets 4 guesses. If the user is incorrect 4 times, they're supposed to be told they're incorrect, the location of the ball, and return to the menu. However, when I'm running the code, it lets me guess for forever. I have the increment for the incorrectGuess variable, but I'm assuming there is a scope issue or something.

Help would be appreciated! Also, ignore my comments currently. That's just how I'm tracking the braces.

#include <iostream>
#include <array>

using namespace std;

void displayMenu();
void displayGameMenu ();


int main() { //mb
int userChoice;
int n;
do { //dob
displayMenu();
cin >> userChoice;
bool gameOver = false;
if (userChoice == 1) { //0b
    displayGameMenu();
    int incorrectGuess;
    cin >> n;
    if (n < 3) { //1b
        cout << "The minimum number of cups is 3. Please enter the amount of cups you'd like to play with: " << endl;
        cin >> n;
    } //1e
    else { //2b
       bool cups[n];
       cout << "The game is ready, and the ball is under one of the " << n << " cups. Guess which cup the ball is in: \n";
        for (int i = 0; i < n; i++) { //3b
            cout << "Cup " << i + 1 << "\n";
          } //3e
        cout << "Enter -1 to leave the game. ";
        int ballLocation = rand()%(n-n+1) + 3;
        cups[ballLocation] = true;
        int userGuess;
        cin >> userGuess;
        do { //4b
            if (userGuess == ballLocation) { //5b
            cout << "Congrats! You win! What would you like to do now?\n";
                gameOver = true;
            }//5e
            else if (userGuess != ballLocation && userGuess != -1) { //6b
                incorrectGuess++;
                cout << "Nope! Not it! Try again: \n";
                for (int i = 0; i < n; i++) { //7b
                   cout << "Cup " << i + 1 << "\n";
                } //7e
                cout << "Enter -1 to leave the game. ";
                cin >> userGuess;
                ballLocation = rand()%(n-n+1) + 3;
                continue;
            } //6e
            else if ((userGuess < n || userGuess > n) && userGuess != -1) { //8b
                cout << "Invalid guess! Try again: ";
                for (int i = 0; i < n; i++) { //9b
                    cout << "Cup " << i + 1 << "\n";
                } //9e
                cout << "Enter -1 to leave the game. ";
                cin >> userGuess;
            } //9e
            else if (incorrectGuess == 4) { //10b
                cout << "You're out of guesses! Nice try! The location of the ball was cup " << ballLocation << "!" << endl;
                break;
            }//10e
            else if ( userGuess == -1) {//11b
                cout << "Are you sure you wish to end the game? y/n \n";
                string userConfirm;
                cin >> userConfirm;
                if (userConfirm == "y") {//12b
                    gameOver = true;
                }//12e
                else if (userConfirm == "n") {//13b
                    continue;
                }//13e
                else { //14b
                    cout << "Invalid response.. Enter y/n \n";
                    cin >> userConfirm;
                    continue;
                }//14e
            }//11e
        }//4e
    while (gameOver != true);
    }//2b
}//0b
} //doe
while (userChoice != 2);
}


void displayMenu() {
cout << "Welcome to the Shell Game! Please choose one of the menu options below.\n";
cout << "1. Play the Game!\n";
cout << "2. Quit.\n";
cout << "Enter choice here: " << endl;
}

void displayGameMenu() {
cout << "Thank you for deciding to play the Shell Game. How many cups (3 is   the minimum) would you like to play with? " << endl;
}