While using Safari 14.0.3, I keep receiving error messages when I try to open a 3rd party video made available on a school website that uses Blackboard as its platform. The error message is prompting me to allow 3rd party cookies. In Safari>Preferences>Privacy, there is no longer an option to allow 3rd party cookies. I am running BigSur 11.2.3.  How do I allow 3rd party cookies in Safari 14.0.3?