I had the same thing happen. The message I received when I checked the status was "The TurboTax update will be available on or after May 20, 2021. You will need to request an extension to file your New Jersey return and pay at least 80% of the tax that you might owe no later than 2021 in order to avoid a late filing penalty. Then you can file your NJ return later after TurboTax has been updated, Visit the New Jersey Division of Taxation website for more information on filing an extension." The New Jersey Taxation website wouldn't allow me to enter a payment. It kept erroring out and I used different credit cards.
