Usage of Curve pools and yEarn vaults is quite popular now, particularly with yETH launch.
While yEarn vaults can now be purchased directly, previously it was required that you first go via Curve to obtain their LP tokens before you could get access to yEarn. So these historical vault purchases are a bit of a mess right now in Koinly.
Hi please email support@koinly.io with the transaction hash for some of your vault transactions along with your public address. We are working on adding support for Defi frameworks this week.