Disable language in option page (ACF)

Hi!

How can I disable the translation/language of an option page made with ACF?

I have made an option page with ACF, and have a problem with the repeater.
When I for example delete one of the repeater fields, the order gets shifted/offsetted in the other language.

This problem is not specific to the option page. Have also the same problem anywhere else with repeaters…

Found this in the docs, but I don’t know how to use it:

For disabling translation set null into the desired configuration. For example, you should turn off translation for a post type post. There are two ways:

https://valexar.github.io/wp-multilang/

This gets my site’s default language, but how can I use it as explained above?
echo wpm_get_default_language();