Upload speeds are low after they did service area updates

My current internet plan is 2 Gbps download / 30 Mbps upload. I am getting the 1.4-1.8 Gbps download, but my upload speed is stuck at 30–50 Mbps, which is far below the 300 Mbps I’m paying for and have contractually agreed upon with Xfinity. 

I am using Xfinity’s XB8 equipment and have also tested on a wired connection. The issue persists, which indicates it is not a local networking setup issue.

Can you please check my line provisioning and confirm that my XB8 is correctly configured for 2 gbps download and 300 Mbps upload.

If there are any signal or account provisioning issues, please let me know the next steps. Thank you!