Describe the problem:
After the swap in STMX (Storm X) I have had a lot of issues with the FIFO method. For some reason it does not count most of trades/transaction made during the 2020/before the swap. This causes all my trades made in 2021 seem like I have sold tokens that were purchased 2020 (which have already been sold 2020). The problem with this is that basis costs are way too low compared to actual costs and my wallet gains are around 100 000 euros higher than they actually are and this can cause some tax issues.
Which exchange/wallet is this regarding?
Binance
How did you import data into this wallet?
Syncing with API
What have you tried to fix this so far?
I manually counted the transactions to ensure that all coins purchased in 2020 have been sold in 2020 already. I do not know how I could adjust the cost basis.