Do you get +12V out on the lead from the empeg (doesn't sound like it, but have you measured it) ?

If not, is the blue wire still properly attached to the harness/plug? There's been some problems with improperly crimped connectors where the wires have been pulled out of the connector.

If that's still properly connected, there's a, IIRC self-resetting, fuse on the remote output. That might have tripped and failed to reset properly...

I'd contact support...

/Michael