The state of Georgia certifies they did (three times). The electors were chosen based on the law passed by the state legislature and certified by the governor. The legislature does not actually choose the electors. I presented the document proving the elector were certified. You can produce nothing showing any contested electors.
Georgia officials certify election results showing Biden win
https://apnews.com/article/georgia-certify-election-joe-biden-ea8f867d740f3d7d42d0a55c1aef9e69
Georgia Again Certifies Biden’s Win Recertification marks third time Georgia officials counted ballots cast in presidential election
https://www.wsj.com/articles/georgia-again-certifies-bidens-win-11607372810
Attempts to contest the electors fell flat. 5 Republican Georgia U. S. House members objected to the results but could not get a single Republican Senator to co-sponsor.
Six Georgia state legislators sought a special session to select a separate set of electors but the governor refused to call the session. Not only that, but a Georgia law "prohibits the Georgia General Assembly from choosing delegates to the Electoral College except in cases where an election cannot be held"
So, attempts to contest the electors failed.
Irrelevant. Nobody ever said Congress chooses electors. However, Congress did accept the slate of electors GA submitted.
Simply looking at the final electoral college vote shows all states cast electoral votes certified by those states and accepted by Congress.