Asked Octopus about dynamic charging pricing and if I plug in at any time does the lower rate still work this is the answer:
“As we’re connected through your Ohme charger this should be absolutely fine, but if you have any queries about your bill once this is issued to you please let us know and we’ll investigate ASAP.”
So plug in whenever you want to and then if they decide to charge through dynamic charging then it’s fine. We have ours set to add 100% by 5am so plugin when we are at home and leave it to itself. This was the example I gave them and the answer above.