Nguyen,
Your statement about the 1,500 hours is not 100% correct: You wrote that you need "Agile Project Management Experience", but the correct statement is that you need Agile Project Experience.
What is the difference?
You do not need to have 1,500 hours of experience as a Project Manager on Agile projects. You need to have 1,500 hours working in any capacity on a project team that uses Agile concepts to complete their projects. So you could have worked these 1,500 hours as a product owner, designer, software developer or tester. You are not required to show project management experience.
So if the teams that you have worked on used agile principles on their projects (i.e. timeboxing, daily standups, product backlogs, XP development approaches, or others as described in the PMI-ACP Exam Content Outline) then your hours count.
If you cannot show these hours then there is only one thing to do: Get assigned to Agile projects and earn the hours.
Until Next Time,
Cornelius Fichtner, PMP, CSM
President, OSP International LLC