Can't get Next Gen Speed Tiers with Ubiquity UCI

I previously had xFi plans/speeds w/ 150mpbs+ uploads, but inadequate wifi from the Xfinity router.  I upgraded my network to Ubiquity UCI plus Unifi UDM, Switch, & 3 APs.  I chose the Ubiquity UCI because its specifically listed on the Xfinity site as Next Gen Speed Tier capable at 2.3Gbps downloads and 474mbps uploads, so I was hoping for faster uploads as well.

After activiating the Ubiquity UCI, my plan changed to 1300/40.  Now I cannot get the xFi, X2 or any plans to enable uploads beyond 40mpbs.  I spent hours this weekend on chat and phone calls with billing, tech support, and advanced tech support.  No one has been able to help.  Billing/sales says they can't add the plan because "maybe your modem isn't capatible" (which obviously isn't true), so "call tech support or go to a store".  Tech support was not helpful at all.  Advanced Tech Support says they can't provision the modem with the correct bootfile until a Next Gen plan is provisioned, so to call billing.

Has anyone solved this?  Xfinity I need to help please!