You can find this setting by going to a camera, then to Settings, then to Quality and Retention, and then finally going down and ENABLING Restricted Bandwidth mode. The only featured disabled by doing this today is Motion Recap. That should help you out with your Plate Recognizer integration.
Trying to test this to see if that is the case. I am on the 2500 free plan and doesn't reset until the Oct 10th. I think it should work but want to make sure. Can you test on your end?