Hey Chris,
user questions is what helps improve the theme! It is I who should say “thank you” to you for pointing out the bugs ;)
Regarding your question: in case you need to edit the layout of the pages you mentioned, you will need to alter the theme files named “404.php” (for the 404 page) and “index.php” (for the archive-type pages, there are comments inside the file to mark where in the code each type of archive is processed. In case you just need to translate the text strings of the theme, I would recommend using the Localization admin section – input the old and new desired strings, as well as “satori” for the “Domain” field; you can create as many string translations as you need, just note that the strings are case-sensitive.
Sincerely,
Andrii / Satori Studio