Looks like a CORS error
Failed to load https://support.cryptfolio.com/check-user-email-exists: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://cryptfolio.helprace.com' is therefore not allowed access.
We are aware of an issue with Kiwi-Coin API integration where your valid API key/secret may fail to work and return the error Unauthorized. Unfortunately this is an issue on the Kiwi-Coin side, and to date we've not been able to work around this issue.
You may be able to resolve this issue by creating a new API key and secret, and adding this to your portfolio.
Alternatively, you are also able to import your Kiwi-Coin transactions directly through CSV.