There is an error in your configuration of the URL for iframing ePetHealth.
The correct URL is:
https://ePetHealth.com/Home/IndexI/{VetId}
where {VetId} is your VetId.
Adding your vet id to the URL allows us to show the video of your choice on the
login page, and also ensures that only your clients can log in to the service via
your website.