We need details please.
1. What is the domain URL?
2. What is the underlying .wordpress.com URL?
3. Exactly which username account registered the underlying .wordpress.com blog and purchased the upgrade for it?
4. When was the upgrade purchased?
I will type modlook into the sidebar tags on this thread for a Staff follow-up. How do I get a Moderator/Staff reply for my question? https://en.support.wordpress.com/getting-help-in-the-forums/#how-do-i-get-a-moderatorstaff-reply-for-my-question Please subscribe to this thread so you are notified when they respond and be patient while waiting. To subscribe look in the sidebar of this thread, find the subscribe to topics link and click it.