Hi there... I got a new iphone XR and am trying to have my pictures automatically go to Dropbox like they did on my old iphone 6. I have installed and signed into the Dropbox App on both my MacBook and my iphone. I scan the QR code and follw the prompts but the message I get says that Dropbox is NOT installed on my computer yet (but it is) and to try again in a few minutes. I have retried many time - no success. Any ideas what is going wrong? thanks in advance.