Set Upfront to be in Spanish With the Translation Files

Hello.

I translated about 80% of the upfront project to spanish, but now I dont know how to set it up. I downloaded the two files in the translations section of your site, and uploaded it to the language folder in the upfront theme folder.

I also have my site's language set to Spanish.

(I have not tried for Pro Sites, but I want to do the same with all the plugins. I guess the procedure is the same for all.)

I hope you can guide me in the right direction here.

Thank you!