I changed some parameters of the game class and now all the rows and columns are not printing correctly

from cards import Card
import random


class Game:
    def __init__(self):
        self.size = 8
        self.card_options = ['Add', 'Boo', 'Cat', 'Dev',
                            'Egg', 'Far', 'Gum', 'Hut']
        self.columns = ['A', 'B', 'C', 'D', 'E', 'F']
        self.cards = []
        self.locations = []
        for column in self.columns:
            for num in range(1, self.size + 1):
                self.locations.append(f'{column}{num}')

    def set_cards(self):
        used_locations = []
        for word in self.card_options:
            for i in range(2):
                available_locations = set(self.locations) - set(used_locations)
                random_location = random.choice(list(available_locations))
                used_locations.append(random_location)
                card = Card(word, random_location)
                self.cards.append(card)

    def create_row(self, num):
        row = []
        for column in self.columns:
            for card in self.cards:
                if card.location == f'{column}{num}':
                    if card.matched:
                        row.append(str(card))
                    else:
                        row.append('   ')
        return row

    def create_grid(self):
        # / A / B / C / D / 
        header = ' |  ' + '  |  '.join(self.columns) + '  |'
        print(header)
        for row in range(1, self.size + 1):
            print_row = f'{row}| '
            get_row = self.create_row(row)
            print_row += ' | '.join(get_row) + ' |'
            print(print_row)

    def check_match(self, loc1, loc2):
        cards = []
        for card in self.cards:
            if card.location == loc1 or card.location == loc2:
                cards.append(card)
        if cards[0] == cards[1]:
            cards[0].matched = True
            cards[1].matched = True
            return True
        else: 
            for card in cards:
                print(f'{card.location} {card}')
            return False

    def check_win(self):
        for card in self.cards:
            if card.matched == False:
                return False
        return True

    def check_location(self, time):
        while True:
            guess = input(f"What's the location of your {time} card? ")
            if guess.upper() in self.locations:
                return guess.upper()
            else:
                print("That's not a valid location. It should look like this: A1")

    def start_game(self):
        game_running = True
        print('Memory Game')
        self.set_cards()
        while game_running:
            self.create_grid()
            guess1 = self.check_location('first')
            guess2 = self.check_location('second')
            if self.check_match(guess1, guess2):
                if self.check_win():
                    print('Congrats!! You have guessed them all!!')
                    self.create_grid()
                    game_running = False
            else:
                    input('Those cards are not a match. Press enter to continue')
        print('GAME OVER')

Memory Game                                                                                                                                
 |  A  |  B  |  C  |  D  |  E  |  F  |                                                                                                     
1|     |     |     |     |                                                                                                                 
2|     |                                                                                                                                   
3|     |     |     |                                                                                                                       
4|     |     |     |                                                                                                                       
5|     |                                                                                                                                   
6|  |                                                                                                                                      
7|     |     |                                                                                                                             
8|     |     |