Travertine pavers on deck hollow and breaking at corners.

Hi I had travertine pavers installed on my deck I have 9 or 10 sections that are hollow and are moving. They have also broken at these areas around the edges.
I am still under contract and the pool contractor is going to fix the areas that are hollow. I feel like the whole area should be redone as I keep finding more and more sections every day that are hollow. Advice would be great they put down sand underneath before they installed the pavers I’m so frustrated as the patio was 13000.
 
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.