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Hello, We have been struggling to keep our website (http://goo.gl/vS37qA) ranking well in Google since April 30, 2015. For some reason at that time, there were around 15000 blocked pages (mainly Magento layered navigation pages) showing in Google's Search Console.  We used canonical tags, and now all these pages have been removed from Google's index and Google Search Console. We didn't do anything that is against Google's Guidelines. Currently in Google Search Console we see:- Around 50 crawl errors- no malware- no blocked pages - no other error messages in both Webmasters tool.We have never practiced black hat SEO, paid for links, or used tactics that Google penalizes. We noticed in the last few months there are around 1000 Chinese/Russian/Japanese links points to our website, and we have used the disavow tool to notify Google of these attacks.Any help would be greatly appreciated in advance!