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