My Koinly balances for WMATIC are wrong. I noticed that PolygonScan doesn’t show when WMATIC is unwrapped to MATIC as a regular transaction/swap. Because of this, Koinly pulls the data from PolygonScan but isn’t able to recognize when I unwrap it. This results in my Koinly balance showing the total amount of WMATIC I have ever received instead of what is still in my wallet.
This reddit post shows the code in the contract that details how much WMATIC is unwrapped.