Everyone watched Borussia Dortmund's incredible performance against the Catalan football club the previous season, but they stumbled in their first match in the new German league. It was completely unimaginable that even though they were leading 3-1, the match against St. Pauli in the new Bundesliga season will remain undecided. However when Borussia Dortmund substituted one of their players in this match, i.e. if another player was given a chance instead of Jube Bellingham, then his father expressed his dissatisfaction and it's very interesting that he was banned from the dressing room of a German league club. Union Berlin is certainly welcoming Borussia Dortmund for a new challenge this new season because as far as I know, Union Berlin has started this new season with a win.
Dortmund's performance against St. Pauli was good, the only thing that affected them in the match was the red card, Dortmund need to know how to defend when any of their players get a red card, leading 3-1 and ending the match 3-3 is not a good result, I said it before that Dortmund can't challenge Bayern Munich for the league title this season because Dortmund don't have the winning mentality that Bayern Munich has, Bayern Munich have more good players than Dortmund and eve if they meet this season Bayern Munich will beat Dortmund.
Regarding Jobe Bellingham's parents, I believe it was a good decision by the team to ban them from the dressing room, that behaviour should not be tolerated by any team, substituting a player should be at the discretion of the coach, no parents should question the coach's actions, if they do not like what the coach is doing, they should find a way to make things work normally.