Using latest version of Cookies 5 on Mojave 10.14.3
To move Safari from disabled to Favorite section, I followed instruction prompts regarding System Preferences>Security>Full Disk Access. Cookies was already on that list and enabled. I removed it, then added it back before closing the panel. After restarting Cookies, Safari still shows "disabled" and the instruction panel appears when I select "Would you like to give Cookie access to Safari's cookie data". Further I restarted the computer. Same result.

On another matter, whenever I log into my Chase Credit Card site (cookies saved as favorite) via Google Chrome browser or Safari, I get a prompt telling me the browser or device is not recognized. Then I have to go through the process of reestablishing my identity. I have removed those cookies and tried a fresh set (also saved as favorite), yet the result is the same.

thanks for any assistance here.