found 2 untranslated strings and translated them. Also adapted the wording on 2 strings.
- user registrations was untranslated, but "user signups" fit better in my opinion
- Service Logo alt-text was untranslated
- since adapting translations, changed the wording of "Do a sanity check." to "Check that the address is unique.". I found https://gist.github.com/seanmhanson/fe370c2d8bd2b3228680e38899baf5cc to be a good reference.