Unexpected Spelling error

Although the translation at the “.po” file is correct, the word appears misspelled.
The Accept button, when in German, appears spelled as "Akcepterren", while the correct (as appears on the .po file, is: "Akceptieren"

How can I find the button text?

https://wordpress.org/plugins/eu-cookie-law/