It would be great to implement a "code creation verficiation" function. From time to time, there are maintenance task in Nuki servers, or short electrical or network connections problems. And that means that if someone makes a booking at that moment, the code will never be created at nuki web. It would be great to implement something that check from time to time (for example, every 30 minutes or 1 hour) if codes for non-finished bookings have been created in Nuki Web and if not, it will create it. If yes, it can include a "nuki_verified" field that will turn to true, so it can stop with that checking every 30 minutes.