What Is Nolus Swap?
Swap is no longer part of the app. There is no Swap button in the Account popover, no Swap tab in the transfer dialog and no swap page, and an old swap link opens the home page. Decide which asset you want to hold before you fund your Nolus account: convert in your own Solana wallet and bring the asset in with Fund. To change a Solana asset that is already in your Nolus account, Withdraw it to your Solana wallet, convert it there, and Fund the result back. See Swap Assets.
This does not affect margin positions. When you open, repay or close one, the protocol makes the conversion itself, which is not something you trigger anywhere in the app.