When an account is created on Izzyplan, a welcome email is sent and along with it, a link to verify the email. If not verified, after a few days Izzyplan will require it. This obligation is a security mechanism that ensures that you are the owner of the email you used to create the account.
When this window below appears, just click on "Resend email".
If you want to confirm at any time, just go to "My Profile"
Then click on "Confirm email"
You will receive a message in your inbox. Click the link in the message to confirm. After confirmation, your email will be "Verified User" and everything is fine.