As soon as they were given the right to appeal, FIFA took it away
...#Belgium formally objected to that decision, saying it had “no alternative..."
#FIFAs appeal committee, however, has rendered the request submitted by the Royal Belgian Football Association (RBFA) as “inadmissible”. on the grounds that “the RBFA is not a party to the proceedings and, as such, has no standing to appeal the decision,” a statement from FIFA said...
https://sports.yahoo.com/soccer/article/world-cup-2026-belgium-has-appeal-denied-after-fifa-reversed-usmnts-folarin-balogun-1-game-ban-after-red-card-123613835.html
https://www.nytimes.com/athletic/7424790/2026/07/06/folarin-balogun-red-belgium-explanation/