Translating plugin easy blogging to Dutch

Hello,

I found the language file wdeb-default.po and started to translate this file. But when I upload it to /wp-content/languages/wdeb-nl_NL.po or /wp-content/plugins/easyblogging/languages/wdeb-nl_NL.po
This does not work. Can you please help me with where and how I have to save the adjusted language file?

Thanks!