When I use this formula, it works fine,
=COUNTIFS([Date Request Submitted -System]:[Date Request Submitted -System], <=TODAY(), [Date Request Submitted -System]:[Date Request Submitted -System], >TODAY(-7)) + COUNTIFS(Status:Status, OR(@cell = "Submitted", @cell = "Acknowledged", @cell = "Revisit Underway"))
As soon as I add a 3rd range,criteria it states #NESTED CRITERIA.
=COUNTIFS([Date Request Submitted -System]:[Date Request Submitted -System], <=TODAY(), [Date Request Submitted -System]:[Date Request Submitted -System], >TODAY(-7)) + COUNTIFS(Status:Status, OR(@cell = "Submitted", @cell = "Acknowledged", @cell = "Revisit Underway") + COUNTIFS([Assigned To]:[Assigned To], OR(@cell = "Glenn Frazer", @cell = "Alan Jochim", @cell = "Anthony Double")))