TurboTax does not support tax year 2018.
If you are filing a 2018 tax return for a tax refund it will not be paid since it is after 3 years from the due date of the 2018 tax return.
If taxes are owed then you need to file as soon as possible since penalties and interest will continue to accrue until the taxes are paid.
You will need to seek out a local tax professional in your area to assist in completing the 2018 tax return.
