[Fechado] Site title and tagline translation not available ?!?

Background of the issue:
I need to adapt the Site title and tagline translation for the 3 languages of our setting. I have checked all documentation but cannot find these entries in 'String Translations'. I am also struggling to find the entries to customize SEOPress in a multilingual setup.

Symptoms:
The entries for Site title and tagline translation are not available in 'String Translations'. It seems like only the English version can be set for SEOPress.

Questions:
How can I translate the Site title and tagline for multiple languages?
How can I customize SEOPress for a multilingual setup?