@hakan_cetinkaya, please be informed that I have split this post to a new one so that we could manage the issues in the community systematically.
If you are planning to collect your data through Enketo
, you could translate the buttons as outlined in the support article Adding Another Language in the Project Dashboard and Adding Another Language to your XLSForm.
And this post should also help you show how one is able to change the language in a browser:
This post discussed previously should help you manage language in your KoBoCollect android app
: