I approved fixed price contract with a client. I successfully completed my first milestone and also client approved payment as well. Why second milestone not active yet ? Becuase my client haven't funded second milestone yet OR some other reason ?? I attach image for more detail.
Your client has not funded the second milestone yet.
Do not do any more work until the second milestone is funded. It is best to have the job fully funded on the first milestone, because right now, the only money you are guaranteed is the amount the client funded ($40), and that's it.