Price (Bay and sell) are not updated and does not reflex correct price

I am still relatively new, and I’ve just set up my 3-phase system with 3 RS 6000 multis running. Now I am working on the DESS settings.

I live in the Netherlands and use Tibber as my supplier. For the purchase price, I entered the following formula: (P*1.21)+0.0248+0.12286. However, the Tibber app shows a price of, for example, 0.293, while VRM then shows a price of 0.3022.

No matter what I change in the formula, the price in the graph does not change. What am I doing wrong?

Did you find out what you were doing wrong?