@Doekse : loks like the Develco app are not supported/updet anymore.
I do have big problems with the updating of total energy. It does not have a even increase as time go, it sometimes (randomly) drops some kwh and carry on with that new level as can be seen on attached picture (only develco plugs do this).
I have just optained some Develco smart plug minis (ZPLZB-131) but I’m having some troubles trying to connect them. I have tried both the Frient and the Develco app, also tried moving the plug as close as possible to the Homey.
But the connection progress always times out saying that there is no device found.