Do not reply to that email. It is a standard email sent to all the applicant. I have also received it and so many other applicants from our June group have received it. If you have already paid for everything, you do not need to do anything.That email does not have any attachment. Its not a medical request email. Its just a reminder email. I am thinking of sending it via webform whatever they have asked.
Also one more thing, my wife did her medical before she came to canada (less than 12 months when we submitted our file), she need to have another medical done..right ?
Sending webform for no reason may cause delays in your application. You should only use webform when its absolutely necessary.