Hi,
Could you provide arguments when registering a select_advanced field to change the "all" and "none" text, this text appears when enabling select_all_none.
You can try to use a translation plugin, such as WPML, Polylang, to translate the text All, None into other languages. Currently, there is no option to change that text.
We don't use any language plugins as this is a single language site. It would be great to either provide php filters or arguments in the field registration process.
.
