In your instructions in settings there is still the old link displayed, so after updating from 1.5 to v2 external http request cards do not work anymore, the link should be updated but this is nowhere mentioned and in settings the old link is mentioned
It seems that the link to connect via external connextion has changed in homey v2.
The old link is: (v1.5.x) https://HOMEYCLOUDID.homey.athom.com/api/app/com.internet/event/trigger
In Homey 2 this is: https://HOMEYCLOUDID.connect.athom.com/api/app/com.internet/event/trigger
In your instructions in settings there is still the old link displayed, so after updating from 1.5 to v2 external http request cards do not work anymore, the link should be updated but this is nowhere mentioned and in settings the old link is mentioned