Instruments missing

Downloaded and installed Cubase 9 Pro on April 1. Did not uninstall Cubase 8 Essentials first, which could be a complicating factor.

Seem to be missing several instruments, including Padshop, Retrologue, Mellow Piano, Backing Strings, and probably several others. Wondering what to do. Uninstall and reinstall?

Reinstalling should do it.