Virtual Hackintosh - can't connect to Apple servers

I created a a Catalina and Big Sur Hackintosh with help of this:

https://github.com/kholia/OSX-KVM/

This took a while but works fine (in particular when using KVM acceleration) But I can't connect to any Apple services or create an Apple ID. I can't even connect via the command line with curl, which I find in particular odd. Other websites work however. From the console I found ""certificate not yet generated" and other messages. Could this be a reason? I googled up this error and it seems to be related to the serial number. The number is hardcoded and shared probably across lots of devices:

https://github.com/kholia/OSX-KVM/blob/5939987d00c9406f42d9c240edc9e60613af4497/OpenCore-Catalina/config.plist

Is there an easy way to change it? From the apple website it says the number is valid but service is expired. Do I need to change it at all? I guess easiest would be to change the source. Question is to what.... In another thread I found that the ethernet device needs to be changed to en0. But this is already the case.

https://old.reddit.com/r/hackintosh/comments/kedsvi/how_the_hell_do_you_get_imessagefacetime_working/

Any ideas for debugging/fixing ?

submitted by /u/tempadmin0712
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