Unless they have changed something recently I don't think you can. I actually ended up losing an account with great reputation and bankroll when I upgraded my iPhone and couldn't transfer the 2fa over. I didn't record the 2fa code before adding it on my phone so I couldn't put it on the new one.
For some annoying security reason, Apple lets you restore everything except passwords and those 2fa codes, so I basically had to withdraw everything and make a new account.
I have the same, I didn't save the image for the 2fa. So if someone knows, how to undo 2fa and reset it, please let me know.
Email support with some details about your last deposits and withdraws, Micro can help you with it.