WP Smush Pro Stuck on smushing elves are busy

I uploaded about 319 images to be Smushed yesterday and the messaging from your servers appears to be stuck, as this is the same message it initially gave me. It's been well over 24 hours since they were uploaded. How do I get the smushing service to reset itself?

The smushing elves are busy, You are 9th in the queue.
Estimated wait time: 9 hours