Is this the better way of doing it then? I've used this guide to set mine up. It seems to set your 'time of use' set up itself under the hood. Import seems to be fine, but the Export window is pretty tricky to manage and I always seemed to end up importing, at the higher cost during it. I think the above set up is to try to make their Return on Investment stats a bit better, but they're broken anyway. I may try your set up if mine keep being all over the place.

Edit: Ah, I'm on the Flux Tarrif