@Sunshine I hope this helps to explain my issues. I have 3 product. One of then is in my wifi network and can be found. I use the toot mDns (mDNS Discovery - Apps op Google Play) The 2 devices that cannot be 'foud'are in a different wifi network. They are in the same network as the device that can be found. The devices that cannot be found are connected through a powerline adapter. I talked to to someone about this and he said that my powerline doesn't support mDns. They are i think 8 years old and I think they don't suppert this. Adding them to the same wifi network as the one that does work is not an option. I am willing to replace my powerline with one that supports mDns if that solves mij problem. I hope this helps.