Hi ela_zdunczyk,
Please install the Easy logo plugin and provide us your site url so that we can provide you the exact css code to place the logo exactly on the left.
To translate the words into your own language you need to create a .po and .mo file and that file must be added inside the language folder of child theme.
View more about language translation.
Also if you provide us your translation file then we will add it into our theme so that you don’t need to create a child theme and don’t need to worry about the translation file while updating to new version.
Thank you!