I have had the 17track integration working quite well for a while now, until a few days ago (I think that would be when it stopped working).
As suggested by the docs, I use a markdown card which starts
{% for package in states.sensor.seventeentrack_packages_in_transit.attributes.packages %}
**{{ package.friendly_name }}:** {{ package.info_text }} at {{package.location}}.
The trouble is, the sensor.seventeentrack_packages_in_transit no longer seems to be getting created, it is “unavailable”, as are all the similar sensors like _packages_undelivered etc
Anyone seen the same, before I create an issue on github.