using latest 3.37 at time of writing I've discovered a minor bug when renaming a transfer:

renaming a transfer causes webseeds to request the wrong path from the server, ie the correct path would be http://example.com/transfername/filename it will instead request http://example.com/newtansfername/filename resulting in a 404 and causes the webseed to fail.

Thanks for reporting this. It has been sent to the dev.