It's my first tournament, so I can't be of any help. Maybe there's a rule that you don't make it through on a tie if you lost to the person you tied with? (I can't find that rule anywhere, but maybe that's how it goes?)
You're my friend, so I'll say it's a raw deal. You should definitely get a chance to advance.

In the official 2022 Chess.com Daily Chess Championship tournament (here: https://www.chess.com/tournament/2022-chess-com-daily-chess-championship/ ), I honestly didn't expect to get past the first round, especially after losing to the top seed in my group. But then the improbable occurred and I tied with the leader (20 wins apiece). There are no tie-breaks in this tournament, so I should be advancing along with the top seed.
However, on my tournaments page it shows that I've been eliminated. And on the page for the tournament itself, it shows the top seed secured promotion but I didn't.
(I don't know how to link to my specific group, but it's Group 2344, which anyone should be able to see by scrolling down this page: https://www.chess.com/tournament/2022-chess-com-daily-chess-championship/pairings?&page=94 )
And here -- 2022 Chess.com Daily Chess Championship - Player Chan_Fry - Chess.com -- it shows that I have been eliminated.