Data Studio : different metrics if i extand date
I have created a line chart in data studio :
- Organic search
- Dimension : monthly
- Statistic : sessions
If i select a month, by example May 1-31, i have 17 129 sessions in organic search, in Data Studio and Google Analytics.
If i select few months, by example January to May, i have 17 269 sessions in data studio in my line chart.
I have the right data if i only display in Data studio 1 month (line chart, or displayed data).
I don't understand why i have such difference with this Google Analytics Account.
I have not this problem with other Google Analytics account.
Have you ever encoutered this problem ?
Thank you for your help.