You do not want to bypass the ground on this machine; the GFCI tripping means current is "leaking" inside the machine and you could possibly get an electric shock if you continue to use it. Is there a chance the machine froze during the move? This could cause the boiler to split open enough that a small leak has formed and is creating a short. The other cause of a GFCI popping is the heating element rupturing inside the boiler; this usually caused by lack of maintenance (ie. regular descaling).