Unreliable internet - blinking orange on Gateway

Hello, we just had cableTV/internet service restored yesterday after a tree fell in a storm and severed our line from the pole.

Since the repair we've had unreliable internet from our mesh network (ORBI) which is connected via Ethernet to the Xfinity Gateway.

I noticed that the orange light at the Ethernet port on the back of the gateway is blinking when connected to either the ORBI router on directly to a computer.

I read somewhere that the blinking orange light after a power outage (which we also had) could mean that something needs to be reset or reconfigured.

Can someone help me with this issue?