I have to make this new thread since the other thread does not allow me to type an answer in it because I’ve done 3 consecutive posts in that thread.
So I did the
resetbundle “Animus Home Homekit”
Remove Heart from HomeKit reboot Heart and re add to HomeKit and now it seems to work so far (been over 24 hours now) and I can access everything through HomeKit even when not on my home WiFi.
So I’m not ready to say that the issue is fixed yet, but now at least it seems to work for me. Before when I did this as soon as I left my home WiFi the Heart stopped working.
I almost believe more that in some recent iOS/tvOS/iPadOS Apple did some changes more than I believe that the Animus crew has done something.
I know for a fact that I did exactly this after the last big update of the Heart FW and it stopped working pretty soon afterwards then. Having gone for almost a day now on and off my home network this time it at least seems promising.