This is a user-to-user forum, so there's no guarantee that any questions will be answered and it has nothing to do with any support options that you've purchased. From what I see, all of your questions have been responded to.
The EULA for FM allows you to install and use (but not concurrently) FM on two devices.
AFAIK, the marketing emails are generated automatically whenever you download a trial. Your actual trial period begins when you succesfully install the product and specify the type of installation (30-day trial orr serial number install). You can also use the web-option for a trial without having to go through a complete download.
Welcome to forums.
As you mentioned that you received an email from Adobe. That is a auto generated email by the systems, so you don't need to worry about it, If you download the product today, according to system it starts from today however pratically, trial starts after you installed and first launch it. So please ignore that email
You can install the FM in your desktop and laptop and activate it on both the machines however cannot use it at the same time as per User License Agreement. As Harpeet mentioned the email for support team, you can post your question on forums or to that email.
Hope this answers your query.