Site editor language in office 365 does not change when language settings are changed

In office 365 for small business, I'm trying to create a public website under the "Sites" tab in office 365. After going to the "Sites" tab, everything is in the wrong language (Finnish). I need it to be in English. I have tried to change language and even location in all the settings i can find. The language goes back to English when i go back by klicking on the "Office 365" tab in the corner.