When Does Service Plan Speed Upgrade Update?

Hello,

A few days ago I updated from 1g to 2g, with the `Up to 300 mbps upload`. I have gone through 2 iterations of the assistant rebooting my modem, as well as activating it. My upload is still capped at 40 Mbps. What does Xfinity need from me to remove that hard upload cap? The details of my Xfinity Supported modem are below. From my modem I have a 3' CAT6 plugged directly into a router, where there are no constraints on Up or Down within my network. Only my download speeds vary from device to device, especially when using Ethernet. Download speed is not the issue. I changed plans strictly to benefit from increased upload.

MB8611, DOCSIS 3.1, Up to 2.33 Gbps

https://assets.xfinity.com/assets/dotcom/projects/cix-4997_compatible-devices/2025.03.25%20Full%20List%20of%20Compatible%20Devices.pdf