Email links in template sends you to a page without a SSL certificate

Hi,

I have a small problem when sending out emails via auth0 to verify accounts, resetting passwords etc.

The email link inside the email is registered to our domain and works fine if I copy and paste the link in a browser. However, if I click on the link inside the email it sends me to a none certified page (see the attached image).

Our email client in Auth0 is setup with Sendgrid and our links are connected with our custom domain under settings.

Does anyone know how to get around this issue?