If you’re using getwid-megamenu (as of 2024-04-18) and WPML you’ll want to either add a wpml-config.xml file to your theme, or in WPML->Settings->Custom XML Configuration add this to make the main mega menu items translatable.
<wpml-config>
<gutenberg-blocks>
<gutenberg-block type="getwid-megamenu/menu-item" translate="1">
<key name="text" />
<key name="url" type="link" />
</gutenberg-block>
</gutenberg-blocks>
</wpml-config>This technique can be used for any block that isn’t already translatable. With all of the configuration options here: https://wpml.org/documentation/support/language-configuration-files/make-custom-gutenberg-blocks-translatable/