Unfortunately, you won't be able to have a linked Jeppesen electronic chart subscription and add a Jeppesen subscription purchased through ForeFlight at this time. We have 2 alternatives to consider:
Option 1: Cancel your Jeppesen electronic chart subscription with Jeppesen and then add Jeppesen coverage to your ForeFlight account through us. This will allow you to manage both your Jeppesen and ForeFlight subscriptions through our website.
Option 2: Cancel your Jeppesen coverage purchased through ForeFlight and then add this coverage to your Jeppesen account. Once you have added the coverage through Jeppesen you will then need to link the account to ForeFlight so you can download your charts and plates within ForeFlight.