Google detected a significant increase in the number of URLs we were blocked from crawling due to authorization permission errors.
& 2nd one is
Big traffic change for top URL
Search results clicks for ........ have decreased significantly.
The number of clicks that your site receives from Google can change from day to day for a variety of factors, including automatic algorithm updates. However, if you have recently made significant changes to the content or configuration of your site, this change may be an indication that there are problems.
After this my all top urls webpages are deindexed in google & my website is coming without WWW version. If I am putting EX- www.domainname.co.uk then first result is coming without WWW like domainname.co.uk
Not a single keyword is ranking in Google UK for my top pages. I uploaded a crawl error report snapshot of GWT in this post.
I created links only & only from WHITE HAT SEO methods.
the only change I made before this update creating a customized 404 Error Page & I redirected all the not working pages onto Error 404 page. Is this the reason of this problem. Previously all not working links of my site was redirected on home page. Now, Removed the page 301 redirected onto HOME PAGE.
My 8 months hardwork is going to waste after this update. Kindly tell me how to solve this. Is this the problem of crawl errors or any other factor. Will google reindex my www domain name & all the top flight pages.