The service for telephone queries is good. The enclosed installation instructions are clear and well structured. However, as a layman, two mounting points for on-roof installation on sheet metal or bitumen roofs were not quite clear to me. Once they write in the instructions the edge distance should be 15 cm. Measured from where? Here a specification in the corresponding sketch would be helpful. Then, when mounting the inverter, there should be an indication whether the inverter should be mounted on or under the top-hat rail. If mounted on the rail, the screws are too high in my opinion and could damage the solar modules. It would also be advisable to specify a minimum distance between the roof and the solar module. With the inverter, it would be very welcome if in the future the LED display was attached so that it could be seen even when mounted. Also, a tidier arrangement could be chosen for the cable tangle under the modules. However, this only concerns the optics and not the functionality.
The specification of the operation with Schuko plug is very general and unfortunately not yet conclusively regulated by law.
All in all, we are proud owners of a balcony system and hope we can make a small contribution to the energy transition.