The current Z8 strategy with zorro 1.60 uses STOOQ daily data. This is achieved by entering the Symbol in the AssetsZ8.csv file.
For instance for AOK, the last entry on the asset line is
STOOQ:AOK.US. With this, I get bad format errors. To try and get data from AlphaVantage I modified the Symbol entry in the AssesZ8.csv to AV:AOK. When testing the Z8 system, data is indeed downloaded from AlphaVantage, but I still get the same AOK.US bad format data. So, it seems the Z8 system still remembers the AOK.US Symbol name for STOOQ. What is wrong here?