You cannot use the current TurboTax program to file a 2018 tax return. The current program is only for filing a 2019 tax return. To prepare, print, sign and mail a 2018 tax return, you must buy and download the 2018 program and install it on your computer. Here is a link to buy it: https://turbotax.intuit.com/personal-taxes/past-years-products/

If you entered 2018 information in the 2019 program, you must delete it and start over in order to enter your 2019 tax return information. Here is how to clear and start over: https://ttlc.intuit.com/questions/2586254-using-clear-start-over-in-turbotax-online

Ok thank you for replaying to me I appreciate it. I tried to start over but it wouldn’t let me, but I will still try to start over and see what happened!! Thank you once again😁

Hi it’s me again...I tried clearing everything and starting over but apparently I can’t do it because I registered  my tax return, Which means I can no longer clear and start over.

so is there anything else I can do?...like anything. 

I’ve tried to call turbo tax customer service but apparently in order to do that I have to upgrade to Turbotax plus I believe it’s called which means I have to pay for it and I’m not able to do that right now, so if you know anything else I can do then let me know please and thank you!!

If you have not yet filed the 2019 tax return that you entered the 2018 information on and can't clear it because you have registered the account, you can just abandon that account and start a new 2019 return in a new account.