Transmission component not working in 0.100.3

Configuration
1

Hi
I’m having trouble getting the transmission component to work in v0.100.3.
Here’s my yaml:

transmission:
  host: 10.0.1.1
  port: 9091
  name: Transmission
  username: [u/n]
  password: [p/w]
  scan_interval: 10

When I restart HA, I see that setup of Tranmission is successful:

2019-10-25 11:31:59 INFO (MainThread) [homeassistant.setup] Setting up transmission
2019-10-25 11:31:59 INFO (MainThread) [homeassistant.setup] Setup of domain transmission took 0.0 seconds.

But, later on, the connection times out:

2019-10-25 11:32:30 ERROR (MainThread) [homeassistant.components.transmission] Request failed. Original exception: HTTPHandlerError, "HTTPHandlerError 600: urllib2.URLError: timed out"

I am able to connect to Transmission using the Transmission Remote GUI Windows application using the same host, port, username and password combination, so I know that Transmission is working, reachable at that address and authenticating connections with those credentials.

Any ideas what might be the problem?

Thanks,
Tom