When you send an email to support, for example, to register for the Apple Care Protection Plan (which constantly produced a strange error in the online system), and you include the serial numbers, contract number, and order date right away - and then receive a friendly email from Apple signaling their willingness to help. Along with a series of questions. About every single one of the points already provided.
Can't they read at Apple, or don't they want to read? Apart from the fact that I understand something different by a response time of one working day than answering a mail request from Sunday only on the following Thursday ...
I have almost accepted that I have to manually register an APP purchased in the Apple Store for hardware purchased in the same order, no matter how braindead that is.