Apple ID Frustrations

I've just received 2 emails for 2 separate Apple IDs ... "You have enabled two-factor authentication for your Apple ID". I haven't enabled on either account. It says that I will need my password & the 6-digit verification code to sign wef 27Sep16 if I do nothing or "click here to turn 2 factor authentication off" (the only link in the email is to: "https://iforgot.apple.com/withdraw?key=..." which looks legit). So overall it seems like a scam email but the link seems ok. Looking at the accounts I don't think that the additional authentication is active ... (I changed a security question so I can't view or make other changes for 3 days ... boy!) - but I'm left wondering if the email is a scam then what's it purpose; if it isn't then am I missing something when I look at my account and will it all stop working after 27/09/16?

I used to spend a lot of money on apple products, iTunes etc ... but Apple make it so hard ... I don't get the same problems with Amazon.

Has anyone else received a similar email out-of-the-blue?

Thanks.

BTW - I've given up trying to post this to a sensible community/category ... I lost the will to live trying. So I'm just posting it randomly to whatever it lets me.