When you create the request again to be sent to the new email address, it should prompt you which address you want to use.
On the Intuit Link dashboard, even before creating the new request, it should show the new email address if the update you made under Clients was, indeed, saved correctly.
If you do not see the new email address on the Intuit Link dashboard, you should follow the process outlined above again to check under Edit client that the new email address is already there. And if the new email address is there but Intuit Link does not prompt you at the creation of the new request which email address to send it to, you will need to contact Intuit Support because something is tripping up the system.
Still an AllStar