The first and usually only step is to download all your data from CredoEx and upload it into Koinly. There are a couple of ways you can do that:
Note that if you decide to use CSV files, you must make sure to import your deposits/withdrawals and trades for ALL years and not just the current one!
That's all you have to do. The only other thing to keep in mind is to tag your airdrops/forks so they appear as Income on your generated crypto tax forms!