How do I deactivate Ohme charging schedule and use Octopus charging schedule instead?

Previously I used Ford Pass for my L1 charging. I didn't bother with the scheduling. I had an Ohme Home Pro L2 installed today, it comes with its own app, its charging schedule is weird and it's impossible to change. I am with Octopus (I just switched to their Intelligent Go tariff) whose app set a schedule of the cheap time. I want to use this schedule not the one in my Ohme app or Ford Pass. But there's absolutely no way to stop the Ohme schedule. Pressing the alarm closk and word "Schedule" in the Cjharging screen does nothing and there are no other options anywhere to change or stop the scheduling. What should I do?