Thanks for you reply. I tried to investigate a little further...

I made a small Python script connecting to Oanda API and retrieving the marginRates for all Assets. Python retrieved marginRates are correct, exactly the same as on the trading platform. Zorro marginRates are not correct, they are higher by a factor 4-10. Python is connecting to the same account, from the same cloud machine as zorro is currently running on, but getting different marginRates.

I don't understand what going on here.