Elton John banned the Sussexes from his private retirement party. In fact, there is no indication that the Sussexes were even invited to the party.
The claim that Elton John banned the Sussexes appears to have originated from a 2022 article in the Daily Mail, which claimed that John had "uninvited" the Sussexes from the party after they gave an interview to Oprah Winfrey. However, the article did not provide any evidence to support this claim, and it has since been retracted.
In fact, there is no indication that the Sussexes were ever invited to the party. The party was a private event for John's close friends and family, and it is likely that the Sussexes were not included on the guest list.
It is also worth noting that Elton John has not made any public statements about the Sussexes since they gave their interview to Oprah Winfrey. It is possible that John is simply not interested in discussing the Sussexes, and that he did not invite them to his party for that reason.
Ultimately, there is no evidence to suggest that Elton John banned the Sussexes from his private retirement party. The claim that he did so appears to be based on speculation and conjecture.