You have this set to add 30% as above and on a couple of your pic’s on page 1. Surely this should be set much higher to 70-80%!
As a test
I would change above in the settings to add 70-80%
Enable price cap again and set it to never charge over your off peak pence/kWh
charging should be initiated between 0030 and o430 during your off peak rates, regardless of when you plug your car in.