Hello, I would like to use a control group at the campaign level in
order to apply it on every deliveries from the campaign. I made a test
but it does not work and I don't understand why. Below the steps
followed: 1. Campaign creation: targeting + delivery2. Delivery: in the
"To" parameter the option "Do not enable the control group" is selected
3. In the campaign advanced parameters, the option "Enable and edit
control group configuration" is checked and I used a random sampling4. I
run the wor...