Translation files 2.4 (nl_NL) / WP 5.7.2

Hi,

I’m using your very flexible and nice theme ‘Simple life 2.4’. Everything works, besides that according to the WP 5.7.2 dashboard a new translation version should be available. (the message is only coming up using this theme without any plugin). Might be the case, because the only existing nl_NL .mo/.po files date from 2020-10-22. I made complete new ones thanks to poedit and the actual Simple life .pot file. But the message remains…

Tried both directories: /wp-content/themes/simple-life/languages and /wp-content\languages\themes (where should they be, by the way?)

What could I do better? What is my mistake?

Thanks and a nice day!

Bert