We also have another ticket with a big problem but for this ticket it is something else. Maybe related but not working either.
We have a client with a webshop and when we set browserlanguage to Deutsch, visit the webshop hidden link it doesn't redirect the site to hidden link...
Please note as said in our docs, it works based on your browser language, so it needs to be set to German, and it works only 1 once per 24h by default.