Why do I get this message for such a long time?

Hi there,

I installed WP Smush Pro and wanted to smush all current images in bulk but this message: 'Woohooo, we are crunching the numbers for you and than it is all done.' is there since at least 24 hours. Is there a way to stop the smush in bulk so I can smush the images manually?

Thanks!

Henny Struik