if your on subscription
How to request web support from Subscription Center or get support through your reseller
or you can use the search functionality of this forum or your favorite search engine
or create a thread on your problem and someone on here will try to help
try downloading from here
downloading and installation>software Download links>i need to redownload my product>Autodesk Suites>Product Design Suite
If you are having trouble downloading from the subscirption center you can try the direct download links on the virtual agent as a workaround.
The steps are as follows:
1. Go to http://www.autodesk.com
2. At the bottom of the page, beneath "Help and Support" click "Customer Service"
3. Click the "Ask" button for the "Virtual Agent"
4. Once the Virtual Agent opens, click "Downloading and Installation"
5. Click "Software Download links"
6. Click "I need to redownload my product"
7. Select the appropriate product and download