WriteLog’s Flex-6000 series Rig Type does not support SmartLink-connected rigs.
Check back later, though, things can change. For now, to run WriteLog with your remote Flex connected via SmartLink, use WriteLog’s Rig Type Kenwood TS-2000 and make sure you have SmartCAT running. Note this is limitation is only true for remote rigs. If your WriteLog PC is on the same local network as your Flex, the Flex-6000 settings works, even if the rig is setup for SmartLink.