Download WordPress theme/plugin translations and apply them to your site manually even their language pack haven't been released or reviewed on translate.wordpress.org
Change the MO file export path status from all to current_or_waiting_or_fuzzy.
Exporting all translations will include "Rejected" and "Approved, but obsoleted by another translation" status, sometimes overriding the current ones.
Change the MO file export path status from
alltocurrent_or_waiting_or_fuzzy. Exporting all translations will include "Rejected" and "Approved, but obsoleted by another translation" status, sometimes overriding the current ones.