@SweetP thanks. tried that. sadly cookie 5 is pretty much useless for me now ️

I have the same problem. cookie 5 no longer working. using Mojave 10.14.2 with apple store cookie v5.9.5.
Cookie reports it has removed cookies on safari but they are all still there. They are all there when I check through safari preferences/privacy/managewebsitedata. I have allowed full disk access as described above.
How can I get cookie to work?