Hi, can we register for snap 2nd attempt later or we have to register all the attempts in one go only?

maybe my question was not very clear, I meant can we appear for 2nd attempt after the first? or we have to register beforehand only to appear in all 3 attempts?

You can make payment later as well but check if there is a deal line.

yes u can make payment later on for second attempt

No. You have to apply it in one go.