The first step is to download all your transaction data from AscendEX and import them into Koinly. There are a few ways you can do this:
Note that if you decide to import CSV files, you have to make sure to import your deposits/withdrawals and trades for ALL years and not just the current one!
AscendEX was formerly BitMax, the exchange rebranded in March 2021.
That's all you have to do. Don't forget to tag your airdrops/forks so they appear as Income on your final crypto tax reports!