VST3 plugins in folders named with special characters are ignored.
Install some Klevgränd plugins, placing the .vst3 files in:
C:\Program Files\Common Files\VST3\Klevgränd
Watch as Cubase 12.0.70 ignores the plugins in the folder and refuses to scan them.
Rename the Klevgränd folder to “Klevgrand”:
C:\Program Files\Common Files\VST3\Klevgrand
Cubase 12.0.70 now successfully scans the folder.
As an international product, Cubase should respect folder names with special characters.