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It will affect your ranking if the second blog steals your content. If the second blog which had stealed your content have high DA, your content will be under-valued. Google updating the algorithms by analyzing which website posts the content in web(date analysis) to solve this problem. You can see traffic drops as an indication to identify that the page is duplicated by some other blogs. If you have big website and many blog posts, you can use DMCA which takes care of all the things. If you have any questions, feel free to ask.

Whenever using SEO tools, use any one tool constantly so that you will not get confused. Each of the seo tools have different algorithms.

Check Google console whether any error is there. Re-submit your web pages manually in Google search console.

1. Create backlinks from high DA.

2. Create valuable contents and share it in social media.

3. Use Moz to check competitor status. Do onpage and offpage optimization.

If the contents are not identical, you don't need to worry about losing the rankings. Second-page ranking will be dropped if contents are same.

Google consider HTTP and HTTPS as two separate protocols. Since the contents are same on both versions, google bots consider it as duplicate content. Adding a canonical URL will solve this problem. If you have any doubts, feel free to ask.

Your ranking will be decreased. It is better to use canonical URL to avoid duplicate contents in your website.

1. Create backlinks from high DA.

2. Create valuable contents and share it in social media.

3. Use Moz to check competitor status. Do onpage and offpage optimization.