Google Not Recognizing Domain Name Change

[lsujoe]

It has been over a month since we have switch

https://www.iwdextensions.com
to 
https://www.iwdagency.com/extensions/

Yet Google is still ranking the old domain name in their search results.

• https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=iwd extensions

Are we doing something wrong or does it take Google more than a month to update their results for this type of change?

We have 301 redirected the old url to the new one and submitted a domain name change in GWT. Let me know your thoughts!

[Ray-pp]

Are we doing something wrong or does it take Google more than a month to update their results for this type of change?

It looks like you've implemented the 301 redirect properly. In addition, Google is caching the newer version of your site. You just need to wait until G drops the page from their index.

[DirkC]

I agree with Ray. However, I tried to crawl both your old url & new one always got a "Connection refused" error in Screaming Frog (even when reducing crawlspeed & increasing default response timeout). . Maybe this is completely unrelated, however never had this on other sites before. Did you try to fetch the new pages in Webmastertools?

Your robots.txt is quite long - you're sure that all pages that need to be indexed can be indexed?

(completely unrelated to the indexing problems - I used webpagetest.org to see if your site was accessible by other automated tools - it worked, but also revealed that your pages are extremely heavy to load)

Dirk