When you want the integrate a gen1 Shelly in more than one integration you want the CoIot peer set to mcast. After adding it in both Homey and HA, make sure to change it back to mcast afterwards.
That’s just saying that Homey cant reach the Shelly. Rebooting both Homey and Shelly device will probably fix it.
That’s not possible due to the some devices needing a password and the ability to upload a custom icon. You will probably say, but I dont need that. But I have to consider more users, most of them not having 10+ devices. You could chip in on the linked issue in the Homey SDK repo for adding search functionality though which has been ignored by Athom for about 1,5 years now.
