How to get NIH July 2021 German citizen

I’m trying to apply for an NIH number but am going round in circles. As a German nation (Eu citizen), I should not be able to walk into a Financas office with my passport and proof of address, but they are closed.

There is a telephone number which is on the government website which is answered by voicemail in Portugues which I don’t understand. There is an email address that comes back with a rote message that applies to immigrants not EU citizens.

Any suggestions?