Hi, I'm working on a site that has English and Spanish versions. The client has added a timeline using the Cool Timeline Pro plugin. I've translated all of the timeline stories and set the category to translatable as well. I've manually updated the Spanish version of the page where the timeline displays in order to update the category in the Cool Timeline shortcode. Unfortunately the Spanish version of the timeline is not displaying.
Here's the link to the English version: hidden link
Thanks for contacting WPML forums support. I'll be glad to help you today.
1) This could be a compatibility issue; hence the "Cool Timeline Pro" plugin is not officially compatible with WPML. Kindly check our compatibility list here. (https://wpml.org/plugin/)
In order to debug and test the issue, please login to this sandbox site and upload the "Cool Timeline Pro" plugin. (hidden link)
After that, please create a test timeline and translate it to replicate the issue. If the issue is replicable, please let me know how to reproduce it.
2) It's unrelated to the issue, but according to your Debug.info, the WP memory limit needs to be increased. PHP memory is fine, but WordPress uses 40Mb as default. The minimum requirements for WPML are 128 MB. (Kindly check this page https://wpml.org/home/minimum-requirements/)
You can increase it by adding the following code in your wp-config.php file right before the /* That's all, stop editing! Happy publishing. */ line: