I am marking this topic as solved. Now hardware devices can be added to the app by the user and it works.

Unfortunately, I can't quite reproduce this here. Do you have an idea, which plugin/module might be requiring PyQRCode so I could test this further?

@rjousse18 whoops, we had a bug in our renovate configuration. However, the tests fail - https://git.cloudron.io/packages/homeassistant-app/-/merge_requests/7 . We are looking into this.

Yes my.subdomain.com works perfectly. and yes i changed the cloudflare dns to the same local ip as the my,subdomain and it is now working. i thought guac would be running on a different ip address to the cloudron machine

Indeed on Cloudron the app needs to specify which ports are forwarded from outside to the app container. Currently HA has no ports setup there. We can easily add port 1400 for this, but it is not clear how this is protected by HA. Is this designed to be used in a trusted home network or fine to be exposed on the public?