Are there any free file options for low income persons needing to use form 8880?

https://ttlc.intuit.com/questions/2586254-how-do-i-clear-and-start-overIf you qualify to use it, there is another full-featured free version of the software:

Try Free File: 

You qualify if your income was $39,000 or less, or $72,000 or less if active duty military, or if you qualify for Earned Income Credit

https://ttlc.intuit.com/questions/1900583-what-is-turbotax-free-file-program

• https://ttlc.intuit.com/questions/2026912-how-do-i-switch-to-turbotax-free-file-program

Note:  If you do not qualify to use Free File then you will have to upgrade to Deluxe or higher in the paid versions of the software.   

 Online Deluxe $40  State software $40

Or—-Use this IRS site for other ways to file for free

So I did the clear and start over.   Went to the IRS free file site and started from there.   Went through the whole thing but when I got to the filing it failed with an error about some form that was not supported by Free File?

Gave up on Turbotax and when to another Free File provider and we filed there.   Not sure if it has been accepted by IRS yet?   What is the significance of Registering?