@SweetP I feel that the information above should be updated. I have been encountering the issue for some time, and I continue to encounter it from time to time. I am currently on Monterey. There is no ~/Library/Containers/com.sweetpproductions.CookieApp/Data/Library/Application Support/CookieApp folder in my Library. There is definitely a ~/Library/Containers/Cookie folder, but there seems to be in that folder various items unrelated (?) to Cookie that I am not sure I should delete (more than 9 Mo total size).
What I delete is the small (sub)folder: ~/Library/Containers/Cookie/Data/Library/ApplicationSupport/CookieApp (it contains Favorites.plist, Settings.plist and TrackingCookies.plist). It seems to do the job.
Any comment or advice?

@sweetp Since I had not received a notification, I have only discovered your answer today.

It has worked fine. Thank you for helping me to solve the issue!

I am using Big Sur, just upgraded from Catalina, but in recent days I have had the same issue as the one reported by the other user (both on Catalina and on Big Sur). This makes Cookie useless.
 
I have attempted to follow the advice that has helped the other user solve the issue, but:

1. Due to the constant flow of notifications for approving access that block anything else in the app, I am never fast enough for reaching the preferences.

2. In /Library/Containers/ there is nothing such as com.sweetpproductions.CookieApp - I see com.surteesstudios.BartenderWindowHelper followed by com.syniumsoftware.macfamilytree7, but nothing in between. A search on the disk has yielded no such folder.

Maybe it is found elsewhere on Big Sur, or maybe I should remove something else?

A solution would be much appreciated, since I am using your app several times a week