DV2021 ended on September 30th 2021. In the normal course of events, no visas would be issued after that date. There were lawsuits filed against the government which achieved a reservation of a certain number of visas for later issuance, but the two main ones only achieved a win for plaintiffs (who had paid a lawyer to represent them as a plaintiff). I assume you were not covered by those suits given your "out of the blue" question.
There was also another lawsuit (Rai vs Biden) that achieved a reservation of 966 visas for later issuance, but only for cases that were assigned to one of 27 embassies. Those embassies were: Vienna, Brussels, Prague, Tallinn, Helsinki, Paris, Frankfurt, Athens, Budapest, Reykjavik, Naples, Riga, Bern, Vilnius, Amsterdam, Warsaw, Lisbon, Bratislava, Ljubljana, Madrid, Stockholm, Johannesburg, Hong Kong, Dublin, Guangzhou, London, and Rio De Janeiro..
If you were originally assigned to one of those embassies you might still have a chance, although that lawsuit is being appealed by the government.
Other than that, if you were not covered by one of these lawsuits your chance from your DV2021 win is lost.