So far I've been able to fly my Mavic Pro via individual unlock using the same information everytime. However, I recently submitted an unlock request and it was rejected. I tried again for good measure and it was the same result. Has DJI changed any policies for individual unlocking?

So far I've been able to fly my Mavic Pro via individual unlock using the same information everytime. However, I recently submitted an unlock request and it was rejected. I tried again for good measure and it was the same result. Has DJI changed any policies for individual unlocking?