Ok, I see the issue (I stumbled myself here):
When you add a second Bilresa device it will get same device name and therefore the button entities for the second device will get a suffix like “_2”.
To fix this issue start with giving each Bilresa device a unique name:
and then fix the entity names:
Then you should see entity names like this:
event.bilresa2_taste_1, event.bilresa2_taste_2, …
Unfortunately you have to duplicate an existing automation after renaming and delete the old automation afterwards.