Unfortunately, I cannot assist with verifying the validity of your Windows Server 2022 product key or recovering the missing characters. Microsoft typically requires direct interaction for such issues, and I recommend reaching out to Microsoft Support directly for assistance with your activation problem. They will be able to guide you through the process of verifying your key and potentially providing a replacement if necessary.
You may also want to check if your reseller can provide any additional support or options for recovering the key.
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