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@gmkrish I have installed yoast but how can it help in correcting the re-canonical issue. Please elaborate..

@Marcus Waiting to hear back from you..

@Marcus Thanks again! Can you suggest some good agencies who could do that for me?

@Marcus Thanks a lot for your quick review. I really appreciate it.  I am in a total mess now

Can you suggest how should I handle the duplication part (Point no 4)? Should I delete/re-phrase the content and upload again?

Is there a tool that can help me detect duplication of content?

Thanks in advance.