HS100 - Can't connect to Wifi network in the initial setup
I already have 3 smart plugs (HS100) installed at my home and they all work perfectly. I bought for Christmas another one and I just can't add it in the Kasa app.
The plug connects to my phone using the plug Wifi, then asks to choose the Wifi network from my home. I choose the network and from there the app displays a message saying the plug is trying to connect to my network and it stays on this forever.
I already tried to connect the plug to several other power sockets, trying to run the initial setup on other phones, to deactivate my router's firewall, resetting the HS100 and the result is always the same: the smart plug doesn't connect to my wifi network.
I don't know what else can I do if not returning the HS100 to the vendor (Amazon). Is it common these configuration problems with these smart plugs? As I mentioned before, I have 3 of them and didn't have any issues.
Any ideas on how to solve this?