CoinLedger only needs "Read" or "View" access to import your trade history. This permission protects your accounts. Learn more about API access in this article here.
Click on the Sync Transactions button to go to your Gemini account.
After clicking the button, it will take you directly to the Gemini website where you can authorize CoinLedger to import your trades.
First, enter your SMS/Authenticator app verification code.
Then, on the following screen press Allow to give CoinLedger read-only access to your Gemini transaction history.
After clicking Allow, it will take you back to CoinLedger, where your automatic import will begin.
Now, all of your trades and transactions from Gemini have automatically been imported!