Error (-7003) when trying to sign in to Apple Account on my HomePod mini

I've already tried changing my password and I can log in online with no problem. We tried 3 different phones with different Apple IDs, I talked to the Apple Support for over an hour and they couldn't figure it out either and told me that I would have to talk to a senior as we tried all the other resources. Long story short, I brought it back to the store where I bought it and even they couldn't get it to work. I got it exchanged and we tried to set it up in the store and it wouldn't work either, not even with their phone. So what I got told by the worker there is that there might be an issue with the white Homepod Minis, because the blue one they had worked and it connected to my phone without a problem, but the 2 brand new white ones didn't work. Thank you for trying to help though!!