Importing Duplicate Products Issue

I imported a lot of products from AliExpress to my store using this plugin, but there is a problem. It seems like the plugin or the Google Chrome extension can’t recognize that some products have already been imported, so it imports those products again, resulting in duplicate products. Is there any way to fix this?

Here’s a video explaining the issue : https://www.youtube.com/watch?v=TH1Lno1puYA