Hi,
Depending on what translation software you are using, there are a few reasons this might not be working. The short answer is that we have caching mechanisms built into the plugin that help decrease overall page load times, and how much this plugin impacts site performance.
With that being said, when you view your site in one language and then use a language switcher included in a plugin to switch the timeline language, the old cached timeline content is served to your users.
You’ll find in our documentation, reference to this with the translation plugin ‘qTranslate’ – https://www.wp-timelineexpress.com/documentation/qtranslate-languages-not-loading-properly/.
We have built-in support for WPML, so no further steps should be needed if using WPML. If you are using another method of translation that is not working, feel free to let us know and we can investigate and either provide you a solution or build in support so translations work with your tool of choice.
Drop us a line or post back here and we can get the conversation going.