I see your user report. The save files should be under:
/Users/[yourUsername]/Library/Application Support/com.Company.ProductName/savegames/
So "com.Company.ProductName" is supposed to be Bad Optics/Catadel but I might have not specified that correctly in the build so it might just be under a folder literally called "com.Company.ProductName".
You can check which save is the one you want from the load save dialog (it shows the name of the save folder there). Zipping up the save and sharing it to me via google drive is probably the easiest way. I'm working on adding a way to upload your save with the user reporting dialog in a future update.
Please let me know if you run into any issues/have any questions. I would really like to see the save!