We had palm trees doing that and we hired an arborist who corrected it. He stated that the mesh and stones were holding back nutrients from getting to the roots as well as not getting enough deep water. He removed the mesh, dug out the soil around the roots and replaced it with garden soil, covered it with Black Kow and then bark nuggets, upward growth problem solved. As far as the roots getting through the pavers it will continue to do that unless there was a barrier put in place when the tree was planted.
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