Changing details in the gov.pt website/app

It's a long boring story in which I've never been able to get a Niss number. I have the temp. Residency card since 2023, it's printed with my nif and SNS number.

So I went to one of the espaços de cidadão on the 12 locations specifically for this purpose to request the Niss. Received the Niss number but in requesting the Niss, I've somehow received a new SNS number.

I'm in the process of getting documents together to apply for citizenship, I've been here since 2019 , got the old residency initially through the município.

Now within the gov.pt portals I have one SNS number but in the SNS app and on my card I have another. I'm going in circles trying to replace the second SNS number with the old one.

Has anyone experienced this and found a way to resolve it? I've called and emailed but have been told to call sns ,aima, the espaço de cidadão, all of which advise another govt department or don't respond to calls or emails. The websites are a giant loop in which there's no way to address this specific issue. I'm going slowly insane.