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Then maybe its AI was editing your sentences more substantially? Checkers show the post text as AI-generated with 100% confidence.

I also want to see. Could you please share which tools you used?

And sorry, it may be caused by Grammarly modifying some sentences.

I will be more careful about my next article and try to avoid external tools for refining grammar.

Cool. :) If you search for AI detector, you will see the tools.