Welcome back to the Wefugees Community and thank you for reaching out to us again.
I remember that we discussed the 6 months waiting period of the Dublin regulation already in one of your earlier opened threads, right? Here the link.
Now you received a letter from the BAMF declaring that this period expired? As far as I understand, this could mean that the responsibility for your asylum procedure is with the German government now. Maybe you can explain in a bit more detail which information they gave you in the letter.
I will also link our dear @mbeon-fardeen and @mbeon-Ruth here, maybe they can give some advice.
All the best,