Resident Permit
You must register with the local authorities at your new place of residence no later than 7 days after your arrival in Germany:
https://www.fau.tv/series/welcome-day-s25/3-formalities-ii-city-registration-and-bank-account-s25?
Registration office in Erlangen (German)
Registration office in Nuremberg (German)
You can only register with a permanent address. The address of a hostel or hotel will not be accepted.
