Dear Ifernagu,
Let’s go one by one.
1) As I can see, the theme is updated on your site – https://prnt.sc/y02lzu It is the latest version.
2) Related products – https://prnt.sc/y02nbb
I’ve created a translation for XStore Core plugin, so now you can translate https://prnt.sc/y02oix > https://prnt.sc/y02ou8
3) Have you read the article of the Elementor plugin about the 403 error? I’ve published this page using Elementor without any problem – https://prnt.sc/y02rl9 Is it solved?
Regards