Are you 100% sure you’re talking to a Flying Blue? Because the URL link in this email is not an actual Air France domain. And the wording in English is very bad. Even for for Air France. Are you clicking that link and getting some sort of phone number on the resulting page? If so, the whole thing could be a scam, make sure you’re looking up the Flying Blue phone number directly from flyingblue.com.
None of this makes a lot of sense. You should be able to talk to somebody at Flying Blue that’s able to tell you what’s going on.