The Philips Hue plugin in Designer 3.1.0 is using the old discovery endpoint and I’m unable to add my bridge beacuse the discovery fails.
Effective July 1 2018 (nupnp) bridge discovery is supported by a new endpoint, which is https://discovery.meethue.com. The old endpoint www.meethue.com/api/nupnp has been deprecated but remains available until July 1 2019 . We had to change to the new endpoint such that we can guarantee a high reliability with the increased amount of traffic we are getting. There are no other differences besides the url.