Hi Sphin,
Try this, add as I did below in the zorro ini at the end "EUR":10 and let me know if it works.
In this care I set 10 Euro as minimum order size.
Cheers

MinOrderSize={"error":[],"result":{"REP":0.3,"XBT":0.002,"DASH":0.03,"XDG":3000,"EOS":3,"ETH":0.02,"ETC":0.3,"GNO":0.03,"ICN":2,"LTC":0.1,"MLN":0.1,"XMR":0.1,"XRP":30,"XLM":300,"ZEC":0.03,"BCH":0.002,"EUR":10}}