Thanks @Tuny,
according to this SMA also has a correct SunSpec data format, but at a different address than SolarEdge uses. However the autodetection should had detected the correct address, so if it didn’t that is a bug in the binding.
If you could turn on logging for the modbus communication and log the autodetection process (with the modbus register dumps) that could help identify the problem.
So long manual setting could be a solution. Also according to @Sascha_ the inverter might reports invalid data while not producing power, but that could be normal.