Hi have a hayward ec30 earth filter and the bump handle to regenerate the earth is limp it has no resistance at all with the filter on or off..any answers thanks?

Not sure with an EC30, I have an EC45 but assuming they are similar make sure the steel rod in the center top is attached to the bump handle.

less likely:
With an ec45 you can detach the top of the canister fairly easily and inspect the rubber gasket and fingers inside. look for a tear in the gasket, but you'd probably get D.E. going into the pool if this was the case.