Dear Mr. Jochen. First of all, I would like to thank you for your order. According to your inform through product reviews on our web page. I have checked the information in the system and found that the trading partner checked it for you on 08/11/23. It was found that the pulse meter on the handle of the product had a problem and had to be replaced. So they made an appointment with you to come in and replace the parts on 14/11/23 but because you are not available on that day, If you are available, you will directly notify the partner to make an appointment with them again. However, if you have any questions or problems, you can directly contact us at HP Call Center 1284 to 24 hours. Thank you // Admin