To explain hidden divergence...
If price moves above the previous pivot but the RSI does not (it remains below) then price is caught in divergence so it is sold down causing it to snap back and close below the pivot. So no longer can we see it hence it is hidden.
If price moves above the previous pivot but the RSI does not (it remains below) then price is caught in divergence so it is sold down causing it to snap back and close below the pivot. So no longer can we see it hence it is hidden.