All versions you have ever downloaded are available in your account.
- Login to your Telerik account
- Click on "Products and Subscriptions" > "DevCraft Complete"
- Click on "Download installers and other resources"
- Click the "Older versions" link in the "UI for WinForms" pane
- Click the desired version
If you have not downloaded it, it will not be visible in your account and you will have to contact firstname.lastname@example.org with request for specific version(s).
I hope this helps.