Advanzia Bank Lux Paying 2.94% AER Instant Access for First 3 Months

[ACER10]

I have now tried to sign up as a new customer again. It won't let me past the tax ID screen. It says to fix the error in red. But there is no error message in red.

I had the same issue. Advanzia had a few strange technical issues. For example, I always had to sign in twice with authentication codes, but then it would work.
...or I needed to put a €1,000,00 not a @1000.00 when trying to withdraw €1000. I have no house number in address. I needed to put 0 to get account open. Then I think it was still showing fix the error in red, but still allowed me pass. I was surprised when I received the 'opening account email'. Good luck with it.