If you imported your data when setting up the new Microsoft Edge , your extensions were included as part of the import process. However, only extensions found in the new Microsoft Edge add-ons website can be imported.
We’re continuously working with extension developers to publish their extensions in the Microsoft Edge add-ons website, and we’ll be adding more extensions in the months ahead.
How can I get extensions not available on the Microsoft Edge add-ons website?
If you don’t see the extension you want in the Microsoft Edge add-ons website, you can install extensions from a Chromium-compatible extension store like the Chrome Web Store.
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Go to the Chrome Web Store.
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Select Allow extensions from other stores in the banner at the top of the page.
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Select the extension you'd like to add, and select Add to Chrome.
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At the prompt showing permissions required by the extension, carefully review the permissions, and select Add extension.
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You'll see a final prompt confirming the extension has been added.
Why is Microsoft Translator not in the new Microsoft Edge add-ons website?
Because the new Microsoft Edge includes a built-in Translate feature, we haven't included Microsoft Translator in the Microsoft Edge add-ons website. Please note that the Translate icon 
A language is considered foreign to you if it's not in your preferred languages list in settings. You can add or remove languages from this list by going to edge://settings/languages or selecting Settings and more > Settings > Languages.
You can always translate a webpage by right-clicking and selecting Translate from the right-click menu. We're also working on a feature that will allow you to translate text you've selected. Expect to see this feature soon.
