[SoulReaver]

Some of the string codes are not missing and it still doesn't work. "More like this" (in en_gb) has already been translated from "Similar" en_us to "Änhnlich" in the de_de strings file. I guess More like this and similar mean the same as they both share the same #31622, just BE and AE.

msgctxt "#31622"
msgid "Similar"
msgstr "Ähnlich"

It's still showing "More like this" though. The Kodi language and region has been set to regional > language > german. Am I missing a setting somewhere?
Thanks again

Try putting this in the de_de strings file

msgctxt "#31622"
msgid "More Like This"
msgstr "your translation"

msgctxt "#320005"
msgid "Similar"
msgstr "your translation"

And test again with Kodi language set to German.

U can explain this? I was trying the same to spanish but the 32xxxx digits msgctxt, don't works.

I can't translate all the msgctxt that begin with 32xxxx, any missing or wrong

Copy the missing strings from the en_gb strings.po file which has them all to your es_es strings.po file and then add your translation in the empty msgstr line between the quotes symbols and try again with Kodi language set to Spanish.