Sticky ATC Title to modify in

Hi ecom.france35,

Thanks for reaching to us.

Please add below code to functions.php in Child theme

if ( ! function_exists( 'woodmart_sticky_single_add_to_cart' ) ) {
	function woodmart_sticky_single_add_to_cart() {
		global $product;

		if ( ! woodmart_woocommerce_installed() || ! is_product() || ! woodmart_get_opt( 'single_sticky_add_to_cart' ) ) {
			return;
		}

		woodmart_enqueue_js_script( 'sticky-add-to-cart' );
		woodmart_enqueue_inline_style( 'sticky-add-to-cart' );

		if ( woodmart_get_opt( 'mobile_single_sticky_add_to_cart' ) ) {
			woodmart_enqueue_inline_style( 'woo-mod-quantity-overlap' );
		}

		?>
			<div class="wd-sticky-btn<?php echo woodmart_get_old_classes( ' woodmart-sticky-btn' ); ?>">
				<div class="wd-sticky-btn-container container<?php echo woodmart_get_old_classes( ' woodmart-sticky-btn-container' ); ?>">
					<div class="wd-sticky-btn-content<?php echo woodmart_get_old_classes( ' woodmart-sticky-btn-content' ); ?>">
						<div class="wd-sticky-btn-thumbnail<?php echo woodmart_get_old_classes( ' woodmart-sticky-btn-thumbnail' ); ?>">
							<?php echo woocommerce_get_product_thumbnail(); ?>
						</div>
						<div class="wd-sticky-btn-info<?php echo woodmart_get_old_classes( ' woodmart-sticky-btn-info' ); ?>">
							<p class="wd-entities-title"><?php the_title(); ?></p>
							<?php echo wc_get_rating_html( $product->get_average_rating() ); ?>
						</div>
					</div>
					<div class="wd-sticky-btn-cart<?php echo woodmart_get_old_classes( ' woodmart-sticky-btn-cart' ); ?>">
						<span class="price"><?php echo wp_kses_post( $product->get_price_html() ); ?></span>
						<?php if ( $product->is_type( 'simple' ) ) : ?>
							<?php woocommerce_simple_add_to_cart(); ?>
						<?php else : ?>
							<a href="<?php echo esc_url( $product->add_to_cart_url() ); ?>" class="wd-sticky-add-to-cart button alt<?php echo woodmart_get_old_classes( ' woodmart-sticky-add-to-cart' ); ?>">
								<?php echo true == $product->is_type( 'variable' ) ? esc_html__( 'Select options', 'woodmart' ) : $product->single_add_to_cart_text(); ?>
							</a>
							<?php Quick_Buy::get_instance()->output_quick_buy_button(); ?>
						<?php endif; ?>

						<?php do_action( 'woodmart_sticky_atc_actions' ); ?>
					</div>

				</div>
			</div>
		<?php
	}
	add_action( 'woodmart_before_wp_footer', 'woodmart_sticky_single_add_to_cart', 999 );
}

Regards,