I seem to have two Dropbox folders after updating to File Provider

I now see that I have two Dropbox folders. 

One is at  ~/Dropbox. This is syncing but has no sync icons.

The other is at ~/Library/CloudStorage/Dropbox. This one has sync icons but does not sync, and gives me the error message above. Finder says it is an unlinked Dropbox.

Hi there, wensleydale, thanks for reaching out to us.

This seems like it got a bit complicated, but let's see if we can try to figure out what happened.

Can you open the "sync" tab in your Dropbox preferences and check what the app thinks the actual location of your Dropbox folder is?

Also, what do you see when you hover over the Dropbox icon in your menu bar?

Let me know what you find and we'll go from there.

Hi Hannah, thanks for your reply.

The app says the folder location is /Users/myname/Dropbox. This is the one that is syncing but has no sync icons.

Hovering over the Dropbox icon shows
"Dropbox 242.4.5815 
Up to date"

In case of misunderstanding: on this Mac, Dropbox is not now on File Provider. I did try to update a week ago, but that caused syncing to get stuck, and on the advice of your bot (conversation ID #26089188) I went back to the old ways. The app then worked OK for a few days.

It seems to me that the Dropbox folder at ~/Library/CloudStorage should have been deleted when I opted out of File Provider, but wasn't. Maybe the real Dropbox folder would work properly if I could delete the zombie folder, but Finder won't let me do that. Do I need to go into Terminal to kill it?

Thanks for the update, wensleydale!

Since the app says that your Dropbox folder's location is in /Users/myname/Dropbox, I would suggest removing the other one that's not syncing and then restarting your computer. 

Let me know if that brings the sync icons back to your Dropbox folder.

I have deleted the folder that was not syncing, emptied the trash, reinstalled the app and restarted. The remaining Dropbox folder is still syncing but still has no sync icons.

Hmm, I see.

In that case, please try these steps for an advanced reinstall of the Dropbox app and keep me posted with the results.

I followed the instructions but on trying to reinstall I can't even sign in. I keep getting the error message "Something went wrong".

HI wensleydale​, do you have any proxy, VPN, firewall, security software, or even ISP/router settings that could be restricting traffic to the following Dropbox domains?

Jay, no I don't. Dropbox works fine on the other Macs on this network. The settings on this one have not changed since last weekend, when Dropbox was working here too.