We will stop supporting API 1.0 after the 5th of December https://docs.crex24.com/trade-api/v2/#api-1-0-end-of-life
Instead of API 1.0 you can use the API 2.0 https://docs.crex24.com/trade-api/v2/

We added new options into trading instruments in API 2.0 https://docs.crex24.com/trade-api/v2/#upcoming-changes-to-trade-api-2-0
We ask you to update the code of trading bots to work with the new parameters until the 5th of December.