Technical Support

I see there are multitudes of users having a problem with random earth leakage tripping, but I cannot find any solutions so I have restarted the post in the hope of making it fresh in people's minds! as per Keith's instruction video I installed a contactor which bonded earth to ground while the grid is offline and releases when the grid power returns (I don't have solar panels) I did switch on islanding mode but the moment the grid is restored the earth leakage trips and cannot be reset until the bonding is removed, can anyone point me in the direction of what I'm doing wrong?