Hi @collinks ,
We, technical support, refer to these reports as ‘metadata quality improvements.’ We get a number of these each week. You can report broken resolution URLs here in the community forum or to support@crossref.org. @eatoni is helping an author correct a number of these broken DOI links right now on this forum post.
When reporting the problem, if you have a functioning landing page URL, please do include that in your post. What we’ll do is reach out to the member responsible for the DOI(s) to confirm the correct resolution URLs. If a URL is provided to us, we’ll give the member in question a week to get back to us. If we don’t hear back after that week, we’ll update the resolution URLs in question (if URLs are provided to us).
We’d all prefer to have DOIs linking over to the actual content than off to a blank page, a 404 error, or a gambling website.
-Isaac