To transfer subscription from an old email to a new one, please do as following.
1 Log in Foxit website https://www.foxit.com/ with the old account.
2 Navigate to Orders.
3 Go to Subscription Management and click on Transfer Subscription.
4 Input new email that you would like to transfer to as Recipient.
New email should be an Foxit account before transferring data. If new email has not been signed up, please register first via: https://www.foxit.com/register.html