which Browser are you having problems with?
If it is Chrome, make sure you are using the latest version of Cookie (currently - v5.9.8)

you need to ask Apple for a refund, if that is what you want:
https://blog.supereasyapps.com/mac-app-store-refund-in-6-steps-how-to-get-a-refund-for-any-macos-app/

send me an email at [email protected] and ill send you a license to use with the version from my store if you like.

I have this fixed in v5.9.8 which is available on my servers now. hopefully the App Store version will be reviewed quickly

do you see any patterns with this. I had it just happen, but cant reproduce the problem?

It seems to hold settings when the google.com cookie is added as a favourite. strange behaviour...

ive had a few people report this, and im looking in to it

try moving Cookie to the trash, restart your computer, and redownload again from the App Store

it does need to be running, but you can configure it to not show in the Dock.

that would be great if you could send me the crash log:
[email protected]