HI there, Thank you for reaching out, unfortunately we can't escalate, as it was logged 12 minutes ago.
However our support team will definitely be in contact as soon as possible, to troubleshoot with you.
But by just looking at the issue description, this is likely just a LAN negotiation issue, which is either :
-The Wrong LAN cable being used
-A poor connection on the WAN--> ONT (make sure the LAN Cable has a good connection, perhaps clean it and make sure its firmly connected on both sides.
-Non-Gigabit router (unlikely if you got 200mbps in the past)
-Or your computer NIC is set to 100 full duplex instead of 1Gbps
If you use your Internet over LAN as well, be sure to do the same with your Computer + LAN port on router
Its more common than you think, has happened to me a few times