Overrides after upgrade

Hello support,

I have some overrides after I upgrade. I tried applying the following documentation, but unfortunately it doesn't work for me.

http://stackideas.com/docs/easysocial/administrators/templating/template-overrides

I placed the files under my JA Social II template:


Although I have for example a custom logo here for my email, it still keeps using the default.
Also the language files use the default setting.

How can I override
- the default email logo?
- the default language file?

I'm really trying to apply the documentation here, but I just get stuck somehow.

--Jan