My domoticz is on my Synology Nas. Port forwarding and ssl cerification is ok too. In domoticz put the ifttt api and enabled of course. Website protection enabled and that user and password use in the url. Authentication is Basic-auth. I wrote to IFTTT but no answer. What you think what is the problem, I have no more idea?!

"create applet on ifttt like this:
a. “This” – Google Assistant channel - “Say a simple phrase”
i. Under “What do you want to say?” – Enter “turn on light”
ii. Under “What do you want the Assistant to say in response?” – Enter “ok”
b. “That” – webhook channel -
i. Under “Title” enter “what you want”
ii. Under "URl" put url from https://www.domoticz.com/wiki/Domoticz_API/JSON_URL%27s
ex :https://user:[email protected]:sslport/json.htm?type=command¶m=udevice&idx=3&nvalue=1
you find idx on the list of connected devices on domoticz
you must allow acces to your domoticz from the net, ( open port , basics auth )"