Defining language from WordPress dashboard is not enough. WordPress themes needed to be translated manually according to your desired language. There are several tutorials on the internet you may find but it is just easy as this:
1. Install Poedit.
2. Go to your theme directory => lang/wise-mag.pot and opent the .pot file.
3. Click Create new translation from the bottom part of Poedit software.
4. Choose a language then click OK.
5. You can now translate each words, phrase or sentence by choosing each source text and adding your translation from the bottom part of Poedit software.
6. After you’re done on each word, phrase or sentence, click Save.
7. To activate your translation on WordPress, go to General Settings => Site Language. Choose your language based on what you’ve translated. Click Save Changes.