This thread is resolved. Here is a description of the problem and solution.
Problem: We have our own page template for many different sites. Some of our text blocks are inside the html tags. Is it possible to translate them? I don't see any options to translate our text blocks inside your plugin.
Solution: An XML configuration (https://wpml.org/documentation/support/language-configuration-files/) needs to be created in order to "let WPML know" about custom content.
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