How can I complain to Apple Engineering?

I have a new 2725QC (Dell) Monitor that uses USB-C connection to connect with the iMac (2019, 27 inch) through the back port but the problem is that the volume control can currently only be done from the hardware, not the software control using the Apple keyboard. What should I do in terms of writing code to do this (Swift or Obj-C)? Is there a third-party solution for Intel iMac and ARM Mac?

"Sign in with Apple" logo - how to make personalized for MacOS using my customized logo for the specific application?

I am getting the following error: Failed to save diary entry to CloudKit: <CKError 0x6000035adec0: "Server Rejected Request" (15/2000); op = 10F3CACEA9EC09B6; uuid = 22DDB0B8-9F1B-4BE6-A51B-2ADD08B469B1; container ID = "iCloud.com.domainname.productname"> What should I do to prevent this from happening? I put the right container name and still this happens. I was expecting the data model object to save in the iCloud.

I did a timer that fires every thousandth of a second and it stops after a certain period of time unless I restart the watch and this doesn't happen in the watch simulator so something is wrong with the real watch while the simulator doesn't show this phenomenon. There is definitely a lower software stack bug or the processor cannot handle the load while the Ultra and Ultra 2 have no problems AFAIK.

What should I do? I am getting the following error: 2020-11-09 21:56:47.230590-0600 BatteryTrack 1.0 (iOS)[2897:516910] [SDKPlayback] applicationQueuePlayer _establishConnectionIfNeeded timeout [ping did not pong] 2020-11-09 21:56:48.401030-0600 BatteryTrack 1.0 (iOS)[2897:516910] [SDKPlayback] Failed to prepareToPlay error: Error Domain=MPMusicPlayerControllerErrorDomain Code=6 "Failed to prepare to play" UserInfo={NSDebugDescription=Failed to prepare to play} The tutorial is titled, "Playing My Chemical Romance using the Apple Music API" and I cannot post the link to the page. It would be great if Apple provided more examples.