German Soccer (DFB) Tickets Gone - Other Opportunities?

I was really excited to get tickets to see the DFB practice, but even though I logged on immediately, they were all gone. I'm really sad because my wife is German, my children are half-German, and I've been a big fan of the DFB since watching the 2014 World Cup with my wife as newlyweds and seeing them win it all.

Does anyone know if there will be other opportunities to see them practice or to meet the team or something along those lines?