I used this app once and it messed a lot on my iMac. It wiped out Photos, iMovie, iBooks, 1Password, Banktivity and who knows what else I haven’t found yet. I’ve deleted this app and will never use it again. $10 later and all I have to show is multiple hours wasted restoring files from backups and reparing the damage done. Do not buy, terrible app.
I’ll contact your support, though all I can tell you is these apps were all fine and immediately after running Disk Doctor Pro I went into the Photos app and it behaved as if I’d never opened it and created a new library. I had to restore my library from a backup. After that I began checking other apps and found the same issue for iMove, iBooks, 1Password, and now Banktivity.