So I have a lot of data and someone has changed how it is imported!
I needed to find how many different orders were taken by a salesperson in the month so ran this
COUNTIFS(Dels!$O:$O,"BOB",Dels!$C:$C,">=01/08/2023",Dels!$C:$C,"<=31/08/2023",Dels!$H:$H,">0.00")
which ran perfectly as all...