Polish Dictionary Embedded in Template?

Hello. I downloaded a template from Envato and the dictionary will not change from Polish to English. We even tried to delete the source dictionary file. How can I change the source of the language?

Note: I have already tried modifying the preferences, dictionary, and paragraph/character styles.

Contact the author of the file https://help.market.envato.com/hc/en-us/articles/203039054-How-to-contact-an-author