Search for the skill in your locale at the Amazon website — .
When you click on the button you will be taken to the account-linking landing page with the following form for specifying your tunnel URL and credentials:
In the field you will enter the assigned ngrok URL, e.g. https://a3dd1b636afa.eu.ngrok.io. Type the username and password you previously chose in the configurator in the and fields.
When you press Validate, the details you entered will be used to verify that a Domoticz server responds correctly at that URL. If your entries check out OK then the Validate button becomes a green Submit button. If anything is deemed wrong with your entries you will be shown an error message with instructions on how to remedy the issue.
After pressing Submit, if all went well then the Amazon redirect page will announce successful-linking,
You can now launch the skill by saying "Alexa, open StateReport". That's it — enjoy the skill!
 Note that the skill must be linked with you logged in as the main user in an Amazon family account. Otherwise, the successful-linking screen will be shown but the skill will not link correctly.
 Make sure that FreeTime for Kids is not blocking commands from any Echos you intend to use with the skill.