If a customer orders an EE Broadband package (brand new or BT to EE migration) in an EE store/over the phone, the agent is supposed to load up your mobile account first and use that as the basis to add your broadband account to it so it appears straight away after ordering in your app.
If this is not done, the agent sets it up on a new email and as a result the customer may miss out on the Multi Product Benefits that come with being an EE One customer (having both mobile and broadband). An "account merge" can be done in some circumstances but there are massive queues of customers waiting for this process so it's best it's done right first time.
However with a trial account (not sure what kind of trial it is so im being vague), this sometimes necessitates being set up on a separate account so you may not be able to do anything about this lack of a link.
