In order to apply for the KfW grant, you need an offer. You can request it here.
The wallbox may only be permanently connected for stationary operation by a qualified specialist. It is not allowed to connect the wallbox without a low-resistance protective conductor connection (PE). The wallbox may only be installed in connection with an error protection switch of at least type A.
The wallbox provides a web server for operation. You can either dial into the WLAN hotspot of the wallbox, or you can connect the wallbox via WLAN to an existing network. Then you can operate it with a modern web browser.