Question about 1st deposit

I made a deposit of 1 euro to my account to see how things work on trading 212. I used my own personal bank account that is only in my name, same name as my trading 212 account and id document. Now I got an email from trading 212 that got me confused. They say the bank account name is registered to Abn amro (? That’s the bank I’m using) and they are asking if it’s a joint account? I replied but got no awnser back and the money isn’t in my account either.
Couldn’t find live chat either on mobile so I try here.