Changing Roles in WooC based on Order Status - wordpress

Question

I want to be able to manually confirm offers --> Thereby changing the order status before a user gets assigned a new role on my page. I tried to combine two functions I found here but when I launched them the page crashed.
The manual confirmation is important since we have to check each person that wants to purchase a membership. The Roles are important because I use them to limit access to other parts of the website.
A users Journey:
A user comes to the website. Then has to log in or create a profile. Then they are forwarded to the site where you can get the membership. (Woocomerce and Stripe) I want to be able to manually confirm if somebody buys a membership or not. If I confirm the user gets a new role. If I don't confirm the user gets no role or is deleted ( the payments should obviously not happen in that case.
What is the problem can somebody please help?
function uiwc_change_role( $order_id ) {
// get all the order data
$order = new WC_Order($order_id);
$user = $order->get_user();
$order_status = $order->get_status();
if ('complete' == $order_status) {
if( false != $user && !user_can($user, 'administrator') ){
// our new role name
$role = 'aktives_mitglied2022';
//set the new role to our customer
$user->set_role($role);
}
//return $order_status;
}
}
//add this newly created function to the thank you page
add_action( 'woocommerce_thankyou', 'uiwc_change_role', 100, 1 );

Answer 1

function custom_uiwc_change_role( $order_id ) {
// get all the order data
$order = new WC_Order($order_id);
$user = $order->get_user();
$order_status = $order->get_status();
if ('complete' == $order_status) {
if( false != $user && !user_can($user, 'administrator') ){
// our new role name
$role = 'aktives_mitglied2022';
//set the new role to our customer
$user->set_role($role);
}
//return $order_status;
}
}
//add this newly created function to the thank you page
add_action( 'woocommerce_thankyou', 'custom_uiwc_change_role', 100, 1 );