each language for site title?

Hello,
I have site with 3 languages, en.fr.es

Titles in languages, but it’s show only one language in all titles

for exmaple:

Home – site name
Accueil – site name
Inicio – site name

site name is only in english as in general site title in english, but i changed in polylang string section

What is problem? can you help?

Thanks

https://ww.wp.xz.cn/plugins/polylang/