[Zubersoft]

I'm not sure I have an answer for what you are seeing. I would have to be able to reliably reproduce that issue. The fact that you are saying it happens around the same time makes me question whether the OS is doing something on those devices around that time that is interfering with MobileSheets. MobileSheets itself shouldn't care what time of the day it is. Is there any pattern for when that problem occurs?

Mike