I am working with the Store Shopline theme on Woocommerce, and am trying to set up a version which is localised to German.

This is going ok, however, I can't seem to get a hold of the text string displayed on a certain tooltip. The string reads "Register", and I would like to translate it as "Registrieren".

Interestingly enough, the tooltip for the shopping cart icon just to the right of the register icon is translated, using a German translation installed along with Woocommerce on my server.

I have installed LocoTranslate, and found a string "Register" in this translation file, however, translating this string only changed the localisation in the title for my registration form (not pictured in above screenshot).

I have searched (grep) every folder I could think of on the server in folder home/bitnami/apps/wordpress/htdocs for 'Register', but was not able to pin dow the exact location of this text string.

How can I translate this text string from "Register" to "Registrieren" for the German version of this site?