1. Is this related to iOS or the online dashboard?
2. Please describe the issue you are experiencing in as much detail so we can quickly resolve.
Removing digital generic output takes time and needed reboot and a few dashboard resets.
In general adding basic GPIO button takes time and several sessions or resets to complete
Removing any of the DS18B20 temperature sensors is locked out as an option on all three Pi. On Raspberry Pi B C0 127.0.0.1 192.168.0.2 there is a ? half constructed DS18B20 giving a huge fixed negative junk reading.
I will try a re flash of Pi etc in a day or so.
Have seen several double or multiple simultaneous ‘session timeout’ messages (Chrome) Is there a timeout per Pi ?