Hi @Shonaker! Thanks for your post.
To relink your Dropbox app, did you click on the “Advanced settings” link perhaps, while signing in? If yes, then you’ll need to choose the parent folder of the already established Dropbox folder.
For example, if you have your Dropbox folder in the path "D:\OtherDrive\Folder\Dropbox", you'll want to select the folder "D:\OtherDrive\Folder".
If you need further help, let me know.