Issues with editing orders with version 2.0.0

We noticed that with the new and current version 2.0.0 we have a couple issues with saving changes when the customer has payed via PayPal (with your plugin).

1. We can’t change the status of orders to “completed”. It keeps loading infinitely and nothing happens. After a while if we reload the page the status is set to “completed” but there is no mail sent to the customer and there is also no note of a changed status in the backend (where you can see order notes).

2. We have the same issue with the DHL Integration by the Germanized Plugin. Germanized simply provides an option inside the order to edit DHL labels for shipping. If we put in a weight number, the changes cannot be saved.

3. The same thing happens with refunds. If you click the button to refund the money, nothing happens.

It seems to be the same kind of problem where you edit something inside an order and then you can’t save the changes or change the status of the order. Always the same behavior.

We already deactivated all plugins and changed the theme to storefront, but this bug still happens. We’re also on PHP 8.1 with the latest WP version 6.1.1.

It must be an issue with the current version 2.0.0 because we rolled back to 1.9.5 and all the issues mentioned above are gone.