Kirby 3 not giving me translations?

Trying to enable translations in Kirby 3
Added the code in the config file,
but no languages are popping up.
Manually added language file, still no language popping up in mu settings page.
What am I doing wrong
(still an unregistered version as I’m still in dev offline mode, but I guess that should not worry me…)

ok, weirdly, after switching some stuff in my config file and putting lang first it started working.

Do you have more than one return statement in your config, maybe?