I'm having similar issues, not sure how to proceed! I have a booking for 28th November to 14th December was also rerouted CDG-EWR-SFO and have been patiently waiting for confirmation for what should be CDG-EWR-SFO-SYD-WLG-AKL-SFO-CDG.
The United app shows the new routing, as does the United website, but when I request a receipt, I get an eticket number but it shows the old routing. On the travelport website it shows the new routing but only some of the legs have the green 'confirmed' tick besides them. The legs without this tick are EWR-SFO, SYD-WLG, AKL-SFO, and SO-CDG.
I booked through flightfinder.de if that has any impact (and speak woefully little German so am struggling to navigate their website!)