How to debug DESS API calls? (Not retrieving Octopus pricing)

We’ve just recently moved to Octopus and for now have selected the Octopus flux tariff. I’ve entered all of the DESS information including account number and API key, but the pricing is not showing up.

I connected to the cerbo over ssh in the hunt for log files but I couldn’t see anything obvious where they might be.

Any hints where to look please?

Seems I made a mistake in entering sell to grid information. Selling back to the grid is not available/approved yet in our Octopus account. I removed it and all seems to be working now