I have 1st gen Echo Show and 6 smart plugs. Only 5 will connect. They all turn lights on or off in the Nedis SmartLife app, but when I put in a Group in two Groups in Alexa Skills, only 5 will turn on or off. They are TanTan SmartPlugs. I also have a smart bulb and a 2nd Echo Show and 2 Dots under thee same account. Do you think it is the brand of plugs or am I overloading the system? My intent is to set up one of the Shows at a 2nd location 15 miles away and put 3 of the Smart Plugs on one Show and 3 on the other. Right now, I am trying to set all plugs at one location but only 5 will respond. Using only one Amazon account.