You need to copy the whole .vst3 “bundle” folder and not just the “naked” .vst3 file from inside the x86_64-win folder. The bundle folder contains the extra artwork that is needed to render the GUI.
BTW: you are using Reaper - if you do click on “Open UI Description Editor” it will crash; this is a known issue with Reaper/“Open UI Description Editor” that has been going on for several years now.
- Will Pirkle