Slow connection 90 Mbps vs 800 Mbps

​I have a 800 Mbps internet service and a Motorola MB8611 Multi-gig modem. However, when I do a speed test I only get 90 Mbps max. I have steady blue lights on the front panel which in theory should mean that I'm getting full 800 Mbps speed. However, the LAN jack on the back panel is lighted yellow. Per manual, this means that I only have 100 Mbps on the LAN. When I log in to the modem I see multiple channels locked and this line at the top

Any suggestions? Thanks