I was trying connect to Bittrex exchange API and got following error message:
Login 0 Bittrex 1.1.. Can't connect!
1. I use last Zorro S 1.96.4 2. I use standard Download.c or TradeTest.c scripts 3. I double check api key and api secret in Account.csv 4. I test my api key and api secret with my custom python script - I was able connect to Bittrex API with same credentials without issue 5. Connection to Binnance API works fine on same PC
Bittrex has recently changed their price history URL, but I have no problem with the login. So I don't know why your API key and secret does not work. If you want, you can send both to Support for checking them. Of course you should then change the key afterwards.