Pavers do not sink because the material was wrong. They sink because the base under them was never built to hold. What you see on the surface — the dip, the lipped edge, the puddle that never drains — is the last step of a problem that started the week the crew skipped a compaction pass.
That is why the low bid is expensive. It is not cheaper work; it is the same work with the invisible half left out. The savings last until the second wet season.
What makes it worse in Lakewood Ranch: A great deal of hardscape here sits on builder fill that was placed fast and compacted lightly. The surface looks perfect at handover and settles once the fill finds its own density — usually in the second year.