1) I’ll need to re-run with a clear log to ensure I get you something valid.
2) Can you create a config for the slider range? 100 or 300 are just too high for residential use, and yes, I know I can tap the field. Doing that 10 times is a PITA. The point of the web app is to make things easier, so a configurable max range for the slider times would make everyone happy, no? 🙂
3) I just checked the internal program for the program preview and I see the exact same issue. When I update the Interval to non-zero, I get the preview working.