Have you deleted the "®" symbol from the dropbox folder's name, or rename the folder's name entirely? It will not load unless you delete that symbol, as it conflicts on the path name to import.
You can also try and delete the preset DB files in the
"program data/arturia/presets" folder (win) and aloe the db to rebuild itself, if you where able to import the patches but they don't show up on the presets list, as Mr. Jones explains on the image I've attached in this post