I'm one of those "customers". I tried using connecting to my old account to check out the app after 4 years but I was asked for ID verification, which for some

I'm one of those "customers". I tried using connecting to my old account to check out the app after 4 years but I was asked for ID verification, which for some reason failed, in order to be able to do anything. I can't close my account since there's a 20 eurocent balance on it, so it probably still counts as a "customer" account even though I can't use it in any way.