Currently, Studio doesn’t support resetting the ranking list of a campaign.
But if you have paid for a subscription plan, we may assist you in making 1 simple manual update, once a month. With this, you can request us to reset the ranking list of a campaign.
Alternatively, you can purchase the Technical Support package, then we may support you with multiple simple manual updates during that Technical Support period.
Please contact us at firstname.lastname@example.org when you want to do so.