Hi,
Well, I have a question. How do I change the language to English?
He asked me also to do with the Polish language and Polish characters.
Regards, Peter.

Eleanor CMS have english language , not need for changed to english only you must in admin panel enabled Multilanguage mode ! only this.

TheMrPretox, reinstall system, and choose English in beginning of installation.

Turned into English and I in Russian.

Reformulate your problem, please.