Login to your Bittrex account and click Account on top right.
Then select API Keys from the left menu and click Add new key.
Add new API key by making sure to add your 2FA code if enabled (we highly recommend using 2FA authentication for your security).
Make sure to assign READ INFO permission.
After clicking Update Keys, it will show your Key and Secret. Please note that Secret will be hidden after you close this window.
Now go to CoinStats app Portfolio tab, swipe far to the right and click Connect Exchange.
Select Bittrex from the list and paste your API Key and API Secret.
After clicking Submit you will see your Bittrex portfolio synced with the CoinStats app.
Refer to support in case of further questions. Hope you'll enjoy!