The Shelly i3 has support for calling URL's as "Actions" that are triggered on button switch or press.
These URL's can't contain the "?" question mark though. It doesn't give an error message if you enter a URL with a "?" in it, but it just silently doesn't call such URL's. This is a nasty bug, because to trigger other shelly devices, you basically always need a "?", as those URL's are like this:
http://%7bshellydevice%7d/light/0?turn=toggle
So effectively this is pretty broken right now. I used wireshark to determine that as soon as you remove the "?" from the URL, the i3 works as expected, but when you add the "?" back again, it just doesn't perform the action. Pls fix bug, thanks.
This is with latest firmware: 20200601-123434/v1.7.0@d7961837
Kind regards,
Erik.