2Miners showing offline but rig still hashing?

I've got a 2 card setup running a 470/80 and my rig is hashing just fine but 2Miners randomly reports it as offline yet everything is online? I'm on RaveOS but had noticed this on SimpleMining and put it down to SM but it's happening in Rave as well. There are no GPU faults and everything appears stable on the rig end.