If TurboTax is saying that your income is too high to contribute, you mistakenly entered a Roth IRA contribution. For the backdoor, your contribution was a traditional IRA contribution, not a Roth IRA contribution, followed by a Roth conversion, not a recharacterization. When entering the traditional IRA contribution, make sure to answer No when asked if you "switched' (recharacterized) your traditional IRA contribution to be a Roth IRA contribution instead.
