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Please check the nameserver exceptions/requirements in the article on .DE domain names. You'll want to test the nameservers you are using, at the link to the Registry provided in the article. If, after confirming the use of valid nameservers, you still experience an issue, you'll want to contact our customer support team to escalate the issue to the CCTLD team.
You would need to contact customer support via phone or live chat to ensure you get that discount code applied if possible.
Once your issue is resolved,
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