1. Does it mean that my account opening may not be successful?

Not necessarily, as long as the information you submit is correct, it can be activated.

2. Does the transaction password it mentions refer to the password I filled in when opening an account or the password of my bank card?

It refers to the password you filled in when opening an account. Remember it, otherwise you won’t be able to buy it even if it is actually opened.

But no problem if you forget it, you can call their customer service to reset it.

3. Is the direct sales transaction account number it mentioned the last number that popped up (I replaced it with *)?

Yes, that's right.

Also keep it in mind.