My 2 POW (1st version) is showing 2.6.1 as the latest firmware in the eWeLink app. I use these switches in a waterproof enclosure to control seasonal devices using Alexa. Alexa app will control them, the eWeLink will control them when on cell data, not on local network. Alexa verbal commands would also not work. I deleted the devices from my EweLink app and added them back in, using the local WAP function. Now Alexa works using verbal commands, but the app (which worked a couple of times), gives me a Failed, try again message like before. Is this a firmware issue, is 2.6.1 the latest or is this POW switch now obsolete?