Some exchanges, such as Kucoin, offer IP restriction for enhanced security when generating API keys for integrations. If you have this restriction turned on, you may find that you cannot proceed with adding the exchange to CoinTracker.
Currently, CoinTracker does not have a static IP address, so API keys need to be unrestricted to work with CoinTracker. This post tracks the feature request for adding a static IP address so users can restrict exchange API keys to that IP for added security.
Until this feature is added, IP restriction would need to be turned off when generating an API key.