Have you imported both Coinbase and Uphold into TurboTax Premium Online? Or have you only imported Coinbase transactions? Please clarify.
Your are able to review, edit, correct transactions within TurboTax. Select the box to the left of the transaction line and Bulk Edit is invoked. The pencil to the right may be used to Edit the transaction line.
Select Add another sale at the bottom to add an entry to correct your income reporting.