Using the new Smartthings Android app, and now also the new Smartthings Alexa Skill, the Flush 2 Relay no longer works. I have updated the Device Handlers (I noticed a commit commenting the change was to fix compatibility with the new app), however for me it still isn’t working. In the mobile app, on the tile it always says ‘Checking status …’. When you click the tile for the detailed view, it does correctly show the status (either off or on), however if you try to click it on or off, you get ‘Network or server error. Please try again later’. The classic app still works fine, though it is scheduled to be retired on October 14. The Classic Alexa skill still worked, but it was going to quit working tomorrow (9/21), so today I upgraded and the new skill now doesn’t work. I don’t think it is possible to get the Classic skill back now.
I have 3 of the 2 Relay devices installed in my home, and am hoping there can be a fix for this.