We’ve had a massive influx of users over the last two days. Welcome everyone! 
I’ve literally quadrupled our number of running servers. The number of “waiting” requests is steadily going down but there’s are still delays (for free users).
Want to skip the line? If you buy credits, and maintain a balance of more than 5 paid credits, you’ll be placed in a higher priority class and be placed ahead of everyone else in the queue that don’t have any paid credits. So you could buy $3 worth of credits, still only use your daily free credits for images, and still be ahead of everyone else in the line.
More details at on the credit page. I’ll try make this clearer soon.