Hello & Welcome,
Sorry I didn't see your question earlier and to hear of any trouble you may be having.
I have a link to a short video (about 2 minutes) that shows how to set the Language on a very similar unit (a 70d) during the last part of the video. From the instructions I have access to, it looks to be the identical steps for the 80d.
Click Here for Video --> https://www.youtube.com/watch?v=7jyfQOkngdA
Please give that video a look or two, and then try the same steps as shown in the video.
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Thanks, ***** *****--. .-