This thread is resolved. Here is a description of the problem and solution.
Problem: Guttenberg Paragraph is not available for translation
Solution: 1) Make the translation as complete (100%) 2) Now go to the default language and update the post. 3) Send the post to translation again, this should show all the updated items.
Note: If the steps above don't work, I request you to add something dummy text on the default language paragraph and update the posts and translations.
This is the technical support forum for WPML - the multilingual WordPress plugin.