Incorrectly calculated loading costs for a route.

I wanted to know whether it is cheaper for me if I also use Ionity Passport Power on my route from Rosenheim to Lagos instead of just Tesla. I have prioritized Ionity and Tesla on a "test route" and different prices are displayed. Tesla 40 € and Ionity 60 €. The route runs from Rosenheim via Switzerland to Chambery in France. I had actually expected that the costs would not be far apart and that Ionity would be slightly cheaper. The big difference of 50% extra cost with Ionity is definitely miscalculated. Could it be that the stored prices are not up to date? If so, the function is useless. With the request for an answer. Yours sincerely. Michael