Re: Can't close the page after authentication

Right, you need to make sure you're actually calling handleRedirectURL. (In the code you posted, that was missing.)

If you are using scenes, you need to also do this in SceneDelegate.swift. (Apologies that isn't documented yet.) The SDK has changed a bit since the code in that issue was written, but you can do it like this:

    func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) {
        if let url = URLContexts.first?.url {
            let oauthCompletion: DropboxOAuthCompletion = {
              if let authResult = $0 {
                  switch authResult {
                  case .success:
                      print("Success! User is logged into DropboxClientsManager.")
                  case .cancel:
                      print("Authorization flow was manually canceled by user!")
                  case .error(_, let description):
                      print("Error: \(String(describing: description))")
                  }
              }
            }
            DropboxClientsManager.handleRedirectURL(url, completion: oauthCompletion)
        }
    }