The same thing happens to me. I am in the middle of a journal entry and it just times me out. It is VERY frustrating -- because none of the work is saved. Once I log back in, I have to start over.

There is a glitch with the program. It should not log me out due to inactivity while I am using the app. Not to mention, I have the settings so it logs me out after 3 hours of inactivity and it sometimes happens within 15 minutes of logging in. 

Please fix the issue instead of keep responding telling us to change our settings or contact support. You are support - please make a ticket for it to get fixed.