It's too late. Online closed on Oct 15. Online is now closed for new returns. To do a 2019 year return you have to buy the Desktop program here,
https://turbotax.intuit.com/personal-taxes/past-years-products/
You will need a full Windows or Mac to install it on.
If you want to file for free you can fill out the forms by hand. Here are some basic forms.....
Here is the 2019 1040 return
https://www.irs.gov/pub/irs-pdf/f1040.pdf
or if you want bigger type use 1040SR for Seniors,
https://www.irs.gov/pub/irs-pdf/f1040s.pdf
2019 Instructions https://www.irs.gov/pub/irs-pdf/i1040gi.pdf
2019 EIC and Tax Tables https://www.irs.gov/pub/irs-pdf/i1040tt.pdf
2019 Schedules 1-3
https://www.irs.gov/pub/irs-pdf/f1040s1.pdf
https://www.irs.gov/pub/irs-pdf/f1040s2.pdf
https://www.irs.gov/pub/irs-pdf/f1040s3.pdf
