woocommerce deposit Form with AJAX and shortcode won’t update but add to previous output

Actually figured it out, it was due to the way I printed the data in the main function. Instead of simply outputting it, I placed it in a variable using ob_start and ob_get_clean.
It’s all fixed and the code now becomes:

//Display deposit choice and add to cart shortcode
function add_product_display( $atts ) {
  $atts = shortcode_atts( array(
        'id' => null,
    ), $atts, 'bartag' );

    
        if( intval( $atts['id'] ) > 0 && function_exists( 'wc_get_product' ) ){
         $product = wc_get_product( $atts['id'] );
    ob_start(); ?>

<form class="cart" action="<?php echo esc_url( apply_filters( 'woocommerce_add_to_cart_form_action', $product->get_permalink() ) ); ?>" method="post" enctype="multipart/form-data">
        
        <div class="wc-deposits-wrapper <?php echo WC_Deposits_Product_Manager::deposits_forced( $product->get_id() ) ? 'wc-deposits-forced' : 'wc-deposits-optional'; ?>">
    <?php if ( ! WC_Deposits_Product_Manager::deposits_forced( $product->get_id() ) ) : ?>
        <ul class="wc-deposits-option">
            <li>
                <input type="radio" name="wc_deposit_option" value="yes" id="wc-option-pay-deposit" <?php checked( $default_selected_type, 'deposit' ); ?> />
                <label for="wc-option-pay-deposit">
                    <?php esc_html_e( 'Pay Deposit', 'woocommerce-deposits' ); ?>
                </label>
            </li>
            <li>
                <input type="radio" name="wc_deposit_option" value="no" id="wc-option-pay-full" <?php checked( $default_selected_type, 'full' ); ?> />
                <label for="wc-option-pay-full">
                    <?php esc_html_e( 'Pay in Full', 'woocommerce-deposits' ); ?>
                </label>
            </li>
        </ul>
    <?php endif; ?>
</div>
        <div class="addcartcontainer">
            
<?php if ( $product->is_in_stock() ) {  
         if (pll_current_language() == "en"   ) { ?>
                <button type="submit" name="add-to-cart" value="<?php echo esc_attr( $product->get_id() ); ?>" class="addtocartsubmit">BUY NOW</button> <?php
                 }
                elseif (pll_current_language() == "fr"){ ?>
                    <button type="submit" name="add-to-cart" value="<?php echo esc_attr( $product->get_id() ); ?>" class="addtocartsubmit">ACHETER MAINTENANT</button> <?php
                }
                elseif (pll_current_language() == "it"){ ?>
                    <button type="submit" name="add-to-cart" value="<?php echo esc_attr( $product->get_id() ); ?>" class="addtocartsubmit">ACQUISTA ORA</button> <?php
                }
         }
            else { 
 if (pll_current_language() == "en"   ) { ?>
                <button type="submit" name="add-to-cart" value="<?php echo esc_attr( $product->get_id() ); ?>" class="addtocartsubmit">SOLD OUT</button> <?php
                 }
                elseif (pll_current_language() == "fr"){ ?>
                    <button type="submit" name="add-to-cart" value="<?php echo esc_attr( $product->get_id() ); ?>" class="addtocartsubmit">EPUISE</button> <?php
                }
                elseif (pll_current_language() == "it"){ ?>
                    <button type="submit" name="add-to-cart" value="<?php echo esc_attr( $product->get_id() ); ?>" class="addtocartsubmit">SOLD OUT</button> <?php
                }
             } ?>
        </div>

    </form>


<?php
$html = ob_get_clean();
            return $html;
}
}
add_shortcode( 'add_product', 'add_product_display' );