Lost Output on bottom row of DX168

We run an SQ6 to a DX168 stage box mainly for monitor outputs. Recently, without any changes we lost all output on the bottom row. Top row continues to function without issue. We have tried cycling power and redoing network connects. Net link continue to flash amber and other outputs work fine.

Any ideas on a fix here?

Do you use two DX168 or only one I/O box?

We are only using one box.