Translation problems

Hi, I’m facing some translation problem in the backend of Cool Timeline plugin.

Using .po file I was able to translate almost all the plugin words, but there’s no one reference about Cool Timeline settings, located at the bottom of the page.

Here the screenshot: https://drive.google.com/file/d/1QWpdQjSEkqUIz4_os3I3KJxNnlb-B-O0/view?usp=sharing

Can you help me please? Thank you very much