Is My New Sugar Parent's Request a Red Flag?

Hi everyone. I (28m) met an intriguing person (45?, I'll call them Jo) a few days ago who proposed a sugar parent (SP) relationship, with me as the sugar baby. I thought, why not, and agreed. I didn't know much about these relationships, and I still don't, so I let them take the lead.

So, Jo asked me to download a banking app. After checking it out, it seemed fine, so I set up an account. Then, Jo asked for my login and password. I'm not comfortable with that and told Jo as much. When I asked why, Jo said they wanted to use it for trade. That raised some red flags for me, and I told Jo. They explained it was meant to be a safe account for trades "off the radar." But that account had my personal details, like my SSN.

I told Jo I wasn't comfortable with that and suggested using my Venmo QR code instead. Jo said if I couldn't do this, I shouldn't worry about doing anything else. I pointed out that asking for such details is a lot, even for people who've been dating for years, let alone two people who just met. I felt their request seemed financially abusive.

Jo accused me of not knowing what trust is and said I needed to take a leap of faith. But I'm an atheist, and leaps of faith aren't my thing. I told Jo their behavior could be seen as financially abusive and that others wouldn't take it kindly. Jo ended the conversation, and now I'm not sure if I hurt Jo's feelings or caught them in a scam.

If this was on a reality show, how would people react? Would they think I was being overly cautious or see Jo's behavior as suspicious?

So, am I right for not wanting to share my banking information with Jo? Anyone with experience or general knowledge of SP relationships, please share your thoughts.