This thread is resolved. Here is a description of the problem and solution.
Update / 24th of June 2021
Recently our compatibility team and the developers of Essential Addons for Elementor completed the process of integrating Essential Addons for Elementor with WPML. And Essential Addons for Elementor is officially compatible with WPML.
Translation of an Elementor template does not show up
It looks like you have this problem because that the Essential Addons for Elementor plugin by WPDeveloprs is not yet compatible with WPML.
At the following link, you would also find our documentation about how to add WPML support to custom Elementor widgets which can help you in this case. https://wpml.org/documentation/plugins-compatibility/elementor/how-to-add-wpml-support-to-custom-elementor-widgets/
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