Edit Language not working - by ali1993esoterik

Since two hours I try to change a few words in another language. I read the Documentation and followed the steps – not working.

I looked for a solution in this Support Forum and found another solution – not working.

Website I want to translate: http://bit.ly/1JrhugU

So now I want you support please. What I did since now:
1. Edit the WP_config file with $language and saved changed PO-Files with correct language suffix.
2. Edit the PO-File in languages directory (in the Royal theme)
3. Edit the Pot-File in languages directory (in WooCommerce)

Now I don’t know what to do, to get it work.

I want to change “Additional Information” in “Technische Details” for example.

Thank you