Change title

Easy Photography Portfolio essentially is just a custom post type, so if you want to control the HTML titles – you can use a plugin that helps you do that. For example – Yoast SEO.

As for switching the language – you can help translate the plugin here: https://translate.www.ads-software.com/projects/wp-plugins/photography-portfolio

It’s going to try to use your WordPress language when possible, but only if it has translations available.