For what its worth, I do not pair my car to the Ohme app. Its gonna communicate with the car and adjust accordingly.
Not pairing Ohme to the car means when the car starts charging according to the s hedule I set up with the car and Ohme app, it starts charging at full whack until the car shuts off charging when it reaches my limit of 90%.
I manually added my car (make and model) to the Ohme app and added the Octopus Go rate as well.
It may be different with the Enyaq. The Ohme app did pick up my British Gas EV rate when I was with them easily.