Fortigate 300D SFP not working

We brought in a back up line to our facility and it is ATT Fiber.

There is a Fiber line running from the ATT Cienna to the fiber port on our Fortinet 300D.

I cannot get the port to come up when connected.

ATT has come out and proved the circuit is good at the Cienna with a test device.

I have configured the port with static ip and 1000Full Duplex to match the ATT side.

I tested the cable and the Transceivers to verify they work.

When I loop the cable to two different ports they both light up.

I tried replacing the ATT Transceiver with one of mine as well just to make sure there was not an issue there but same result.

I am at a loss and would appreciate any help.