Question about Steffen WiFi Pilot 2x Adapter Wi-Fi

Steffen no longer has a Wifi Pilot active, but no one has commented on it either on the homepage or in response to enquiries (Schxxxx company).
As an alternative, I need the app from Rittig, which works perfectly with the Steffen Wifi Adapter (the product was certainly not developed by Steffen!!! ;-) ).

Have the same problem