I played arround a little with the sensor.last_alexa and I also tried the example from the wiki.
The thing is as you I would have changed the entity.entity_id in the example.
Try it in your template without changing anything in that example, this way it magically works.
from here
{%- for entity in states.media_player -%}
{%- if state_attr(entity.entity_id, ‘last_called’) == True -%}
{{ entity.entity_id }}
{%- endif -%}
{%- endfor -%}
I think the advantage of this sensor against the one from here is that we don’t have to specify every device. Also if you get new alexa device you don’t have to change something in the code.
EDIT: But I have another issue that I also mentioned here
The last_called true state doesn’t go back to false. So I end up with more than one device having last_called: true.
Does someone else have that?
With the above sensor this will cause two entities in a line. So wrong information.
Could be that issue?