You can contribute to Powered Cache translations through GlotPress. GlotPress is a tool that WordPress uses to provide a unique translation platform.
You can check the translation progress here – https://translate.wordpress.org/projects/wp-plugins/powered-cache/
And, please read the guideline for the translations – https://make.wordpress.org/polyglots/handbook/
Project Translation Editor(s)
If you are interested to be a project translation editor, please reach us by linking your WordPress.org profile.
Thanks for helping with translations <3