I spoke with CS via live chat about this and was told elastic coin support (Ampleforth and similar) would be added in Q1 2021. However, it’s still not available and it’s mid-March already. I desperately need it to do my 2020 US taxes properly (deadline is April 15). I sunk SO many hours into Koinly that I would hate to have to switch platforms at this point. Generally speaking I really like Koinly.
This is mainly for visibility so the devs know this is a priority for some (a lot?) of us. Chime in/upvote if you are also needing this.