Board Thread:Support Requests - Getting Technical/@comment-34769545-20200212114333/@comment-27958705-20200212130545

you probably using some "safe browsing" option or some other "privacy" settings/software, that kills the cookie.

my bad. it is session cookie (will die once the browser closed), so if your browser doesn't use "session restore" feature (whatever it is), the announcement will bother you. the only real way (besides of hiding all notification banners) is wait until fandom will decide to stop.