This thread is resolved. Here is a description of the problem and solution.
Problem: I am trying to use the Review Widget in multiple languages in Elementor Pro. I expected to translate Review Widget. Instead, I'm not able to translate Review Widget.
Solution: As you can see here https://wpml.org/documentation/plugins-compatibility/elementor/#List-of-the-translatable-Elementor-Elements, the Review Widget is not a part of the compatible elements list (but Testimonials is). In this case, you can try switch from Reviews to Testimonials element.
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