not every pattern is available in every language. When purchasing a pattern that is not available in your chosen language, it will be pointed out in several ways.
There's no computer translating the pattern automatically.
To find out, if your purchased pattern is available in English, please chose the pattern in your downloads and click the blue button "download". Then again click on the blue button "view files". You now will see all files that are available. If there are more languages provided, you should see them now.
Otherwise please contact the support-team via firstname.lastname@example.org.