I have been in Germany for more than five years so I am not expecting problems but if you have a moment, I have a couple of questions.
1/ Just to confirm, the only documents they asked to see at your appointment were your passport and the completed residency application form, the 'Antrag auf Erteilung eines Aufenthaltstitels'.
2/ In the 'Antrag auf Erteilung eines Aufenthaltstitels' it asks:
"Haben Sie sich bereits früher in Deutschland aufgehalten?
Have you ever been in Germany before?"
Does this mean prior residency periods in Germany or also holidays or other brief non-residential periods in Germany?