@wooassist Thanks for your answer, I have tried what you suggested and it turns out the theme needed the attribute data-title from the button with the product name, which your plugin does not have defined. If anyone is having the same problem, all I did was add data-title="'. $product->get_name() .'" to the plugin’s button html.
public function woa_add_quantity_fields($html, $product) {
//add quantity field only to simple products
if ( $product && $product->is_type( 'simple' ) && $product->is_purchasable() && $product->is_in_stock() && ! $product->is_sold_individually() ) {
//rewrite form code for add to cart button
$html = '<form action="' . esc_url( $product->add_to_cart_url() ) . '" class="cart" method="post" enctype="multipart/form-data">';
$html .= woocommerce_quantity_input( array(), $product, false );
$html .= '<button type="submit" data-quantity="1" data-title="'. $product->get_name() .'" data-product_id="' . $product->get_id() . '" class="button alt ajax_add_to_cart add_to_cart_button product_type_simple">' . esc_html( $product->add_to_cart_text() ) . '</button>';
$html .= '</form>';
}
return $html;
}
