Speed Warning cannot adjust

My 2017 Bolt (manufactured 11/2017) pops up the speed warning whenever I cross 55 mph.
Yes, I have read the manual that says I should be able to adjust this limit, but I have not been able to change it.
The only way I have been able to suppress the warning is to register my fob as a teen driver.
My attempts to change the limit:
1) Drive over 55
2) Warning pops up
3) Press V (check)
4) warning goes away, pressing the up or down triangles at this point does nothing
Am I missing something, or did the programming change?
I don't understand the manual when it says this feature can be turning off by pressing V (check),
when this is also how you set the limit. How can one button do both actions that are contradictory?
(And a third action of simply dismissing the warning pop-up.)

Manual says:
Speed Warning : The speed
warning display allows the driver to
set a speed that they do not want to
exceed. To set the speed warning,
press [check] when Speed Warning is
displayed. Press [up triangle] or [down triangle] to adjust
the value. Press [check] to set the speed.
Once set, this feature can be turned
off by pressing [check] while viewing this
page. If the selected speed limit is
exceeded, a pop-up warning is
displayed and a chime may sound.