In a period of 6 hours, the T-rex rig keeps mining, receiving jobs and submit shares.
HiveOS dashboard can see and control the rig.
However the shares/work were not registered at the pool side. Both the rig’s stats page and pool side’s wallet status page reports the rig the hashrate is 0. However temp and fan speed are recorded. On hiveos dashboard, no error reported. Miner console seems it is still accepting jobs and submit shares.
A reboot of the rig solved the issue. The rig has been running for sometime maybe 1 or 2 days without issue or report any error.