cs50 / scrabble check50 error Did not find "Player 1 wins

Question

When I run my code, I get proper results including the printf's for Player 1 wins!, Player 2 wins! or Tie! But check50 errors with can not find any of the printf outputs. I've checked, double checked my spelling, does not seem to be the issue. An additional note, VS running this code is very sluggish.

#include <ctype.h>
#include <cs50.h>
#include <stdio.h>
#include <string.h>

// Points assigned to each letter of the alphabet
int POINTS[] = {1, 3, 3, 2, 1, 4, 2, 4, 1, 8, 5, 1, 3, 1, 1, 3, 10, 1, 1, 1, 1, 4, 4, 8, 
4, 10};

// declaring/**prototyping** with includes inputs types function compute_score
int compute_score(string word);

int main(void)
{

    // Get input words from both players
    string word1 = get_string("Player 1: ");
    string word2 = get_string("Player 2: ");

    // Score both words
    int score1 = compute_score(word1);
    int score2 = compute_score(word2);


    // Print the winner
    if (score1 > score2)
    {
        printf("Player 1 wins!\n");
    }
    else if (score1 < score2)
    {
        printf("Player 2 wins!\n");
    }
    else
    {
        printf("Tie!\n");
    }

}

    // define Function compute_score, Compute and return score for string
    // POINTS[] arrary stores points for each alph char
   // upper and lower case alph char have equal points for that character
   // non alph char receive no points

int compute_score(string word)                          // compute scrabble score for 
                                                 prompted word passed to function
{

int a = 0;                                              // variable a to cylce through 
                                                     ASCII upper case scenerios
int sum_score = 0;                                      // variable sum_score to return 
                                                         points sum of word

    for (int i = 0; i < strlen(word); i++)              // variable i to cylcle through 
                                                  word to eval each letter for points
    {
            if (isalpha(word[i]))                       // checking for alpha, only 
                                                    alpha characters receive points
            {
                while (toupper(word[i]) != 65 + a)      // cycle through ASCII starting 
                                               with A to determine uppercase letter
                {
                    a++;
                }
            sum_score += POINTS[a];                     // continue sum for each letter 
                                                            in word
            }
    }
    return sum_score;
}

Error Codes

:) scrabble.c exists

:) scrabble.c compiles

:( handles letter cases correctly

Did not find "Tie!" in ""

:( correctly identifies 'hai!' as winner over 'Oh,'

Did not find "Player 2 wins!..." in ""

:( correctly identifies 'COMPUTER' as winner over 'science'

Did not find "Player 1 wins!..." in ""