Cvt gearbox stuck in sports mode

So my 2000 w plate k11 1.4 auto has started playing silly buggers again recently.
I know the maf needs changing as I have an erratic idle and rev drops kin the rev range, and I have one in order but the gearbox has started acting up.

It basically feels as though the car is stuck in its 'sports mode'. Pressing the button has no problems whatsoever and it feels like it's constantly over revving.

Anyway to reset it or diagnose the problem fully? There is no mention of it when scanning using torque.
Thanks
 
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