For example, all plugins with (x64) in their name have been renamed without (x64). ZebraHZ(x64) to only ZebraHZ.
This means that you get a lot of errors if you load a Cubase 13 project in Cubase 14. Even if you manually switch to ZebraHZ, you lose all the settings and the patch itself.
I don’t yet have C14, but from what I’ve read the you likely need to manually add your VST2 folder in Plugin Manager and scan. By default C14 only scans VST3s.
I’ve just ran into this problem. At the very bottom of plugin manager is a button called “Enable VST2”
I’d also suggest downloading the latest versions of the u-he plugins. They supposedly added VST2 to VST3 migration support, which should enable the VST3 version to automatically replace the old VST2 version if that is not available anymore (haven’t tried it myself yet, so cannot vouch if it really workds)