You need to cancel your subscription plan by following steps.
Deactivating your plan on rekordbox application does not cancel your subscription.
1. Log in rekordbox.com with your Pioneer DJ Account
Use your Pioneer DJ Account that has been associated with your subscription plan.
2. Click "Cancel / Change Plan"
3. Click "Cancel and change to Free"
The page changes to below and click "Cancel and change to Free".
4. Click OK
A pop up shows up to confirm. Click "OK" to cancel your subscription.