Please ask the original developer of this app.
By the way, the current app developer @drenso, is in the process of developing a completely new app named Shelly Control.
In this app, which is currently in beta, all Wi-Fi devices are currently listed individually. I can’t say whether that will remain the case. But that would, of course, solve the problem.
If you need more information about the new app, this is the link to the community app topic → [APP] Shelly Control - Smart home automation is that easy!