Conflict with woocommerce_cart_calculate_fees

I try to add a custom fee in the cart based on what products have been added there. The problem is that even if I set to make the fees TAX free, it doesn’t work. I disabled all the plugins and themes and found that Woocommerce Germanized plugin is the issue.

Any fix?

This is my code on functions.php file

function woo_add_cart_fee( $cart ) {
        $total = 0; 

        foreach(WC()->cart->get_cart() as $cart_item_key => $values) {
            $_product = $values['data'];

            if( $_product->product_type == 'my_type' ) {
                $total += $_product->price;
            }
        }

        if ($total >= 50) {
            $fee = 50;
        } elseif ($total > 0) {
            $fee = 30;
        } else {
            $fee = 0;
        }

        WC()->cart->add_fee( 'Fees: ', $fee, false);
    }

   add_action( 'woocommerce_cart_calculate_fees', 'woo_add_cart_fee' );

https://www.ads-software.com/plugins/woocommerce-germanized/