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iMessage and FaceTime

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Hey,
I got my Sierra Build running but I can't use iMessage and FaceTime.
In iMessage it says that my contact is not registred
and in FaceTime I just can't klick the camera or phone button.

Is this a known problem or is my system corrupted?

Thank you.
 
Joined
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Messages
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Motherboard
Gigabyte Z170M-D3H
CPU
i7-6700K
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GTX 960
Mac
  1. iMac
Mobile Phone
  1. iOS
Just to get it clear:
I generated the serial number etc. and I checked it at https://checkcoverage.apple.com/
I always get invalid serial number. Is it correct or is it something like "serial number not found"?

I tried about 10 different serial number but never got any other message... Now I'm blocked and have to wait to check more.
 
Joined
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Gigabyte Z170M-D3H
CPU
i7-6700K
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No way, it won't work...
Edit:
Now iMessage works. It seems that my nvram is not emulated correct and this gives me a wrong MLB...
I dont know how to fix this, but set it manually to the nvram stored at disk solved my iMessage problem.
 
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Joined
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CPU
i7-6700K
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Mobile Phone
  1. iOS
I set my MLB (System ID) to nvram. It wasn't written correct by clover.
 
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how do u make facetime work on sierra 10.12.6?
 
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