With EDIUS 8 or later you have to make an EDIUS ID, unless you buy the Workgroup version. This stores your serial number and is needed as part of the copy protection. This is the link to the page to access your EDIUS ID info: https://ediusid1.grassvalley.com/
There is a limit to how many times you can activate and deactivate EDIUS. If you want to check what the current status is on your licence you can visit this page and enter your serial number: http://activation1.grassvalley.com/flexnet/operationsportal/logon.do
Download an EDIUS installer
The EDIUS download site has changed but you can still access the old download site here: https://wwwcms.grassvalley.com/auth/
You can also download the latest versions of EDIUS here: https://www.edius.net/updates.html
Get updates for plugins easily
This page: https://www.edius.net/download_plug-ins.html, on the EDIUS.NET site lists many of the plug-ins for EDIUS with a direct link, where possible, to the latest version of the software. VisTitle 2.8 can be downloaded directly from the links here, for example.