(Urgent) losing traffic after 301 redirect

[yukung]

We face a seo problem of losing traffic after 301 redirect.We have used 301 redirect from a sub-domain url to main domain, after a few month, we discovered that the traffic in google is dropped 40% as well as yahoo dropped 50% without reason, we have updated sitemap already, but we cannot find any reason for the traffic dropped till now..The original url (more then 5000 links)https://app.example.com/ebook Redirected Urlhttps://www.example.com/ebookThank you for your help!

[davebuts]

Hi yukung,

Did anything change on the page when you moved URLs? Was it redesigned? Content changed? Anything?

If any changes were made, it's possible that these are the reason for the decrease in traffic...but it's hard to give good advice without knowing the URL.

Are you able to PM me the URL?

Cheers,

David