Sharpen AI 4.1.0 on a Mac is useless- trying to fix blur produces nothing no matter what I try

I’ve got some out of focus images. I thought I’d give the software a shot. Tried it out and the app shows me it’s “updating” but no matter how weak or strong I make the settings, the image is unchanged even though my computer fans are running full speed and it’s chugging away on something. I’m running an iMac 2019 i9 with 64 gigs of RAM.