hello, your email asking for a survey to be completed says 15% in the mail subject area, and only a measly 10% in the mail body. Which one is the correct one?

I'm note sure what this is about. Dit you receive a survey from us or is this about the Community Survey add-on?

I just received this newsletter from Acyba, and it says 10% in the subject and in the body

10% is the correct value