finderhelper.app Dropbox Google Drive

Every since Dropbox was moved to the library, I've lost my ability to sync files in Dropbox to an external drive. Even having problems copying and pasting files from Dropbox to external drive. I'm not comfortable not having a extra archive of files. I considered Time Machine but apparently it can break Dropbox and wreck havoc on files there, possibly destroying them because of sync. I have managed to copy files, a few folders at a time to Google Drive. That works although there's no synch. I installed the Google Drive app so I would have sync, but now I get the following error window ("FinderHelp.app" wants to access files managed by "Google Drive." Google Drive has full disc access and I can't find FinderHelp.app anywhere. So I don't know how to fix this. All of this is brand new since both Dropbox and even Google Drive are within library/iCloud. It is such a pain. Can someone direct me to information about how to deal with all this?