Language Overrides > Cannot find the text in Joomla backend

Hi,

we are just in the process to finalize the configuration of our new site and perform final tests.
Since we are using german as site and admin language, we have downloaded and installed the german translations available for PayPlans and the other Stackideas components.

But we obviously need to translate lot of text that is still being displayed in english.
We are using the Joomla standard method of language overrides and this is working fine so far - but there are some examples where we simply do not find the text.

Example:
The confirmation page on frontend after completing the registration process.

We have located the first text and translated it in german but the last sentence we cannot find.


TEXT TO BE TRANSLATED:
"You may now login to our site using the username and password that you have entered earlier."

We searched the text everywhere:
Germany (Germany) Site
Germany (Germany) Administrator
English (United Kingdom) Site
English (United Kingdom) Administrator


Can you please help me to locate this text (this is just one example).
I do not want to search on the language files directly and override them but really use the Joomla functionality in backend.


Thanks and regards
Markus Berwing