Hey, there.
Hope someone can give me some ideas to solve the problem I've been having.
It happened when I installed a Shelly 1 in my entrance gate:
Usually, and while using the remote, the gate would automatically close (turn off, let's call it) 7 sec. after receiving the command to open (turn on).
But when I try to use the app it will only open - then I have to wait 1 minute or more, press the button again, and only then it will close. But it never closes automatically.
Now I'm having the same issue, after I installed a Shelly 1 PM, with a temperature probe, in my electric boiler/water heater:
If I press the button on the app I can turn it On/Off. But after reaching the desired temperature, or the one stated in the internal thermostat as the right one, it will turn off because of that; but never turns back On, even when the temperature goes lower and lower...
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I've tried to check the "Power On Default Mode" and the "Button Type" options, and experiment with it. But still no luck.... 
Any help would be appreciated!