This "ethnicity" report basically just gives an idea of what my "nationality" is. To me, "ethnicity" would tell me am I Celtic, Briton, Pict, Norse,etc.? I already knew what countries my ancestors came from.
If You have more questions to the area of DNA, Ethnicity, etc., send an email to firstname.lastname@example.org and write somewhere in the subject the word DNA. This will forward the question directly to the DNA specialized group of the support team.
Take a look on the following Post from Yehudah (MyHeritage):