Sadly, unless you get access to a printer, you cannot file it. A 2018 return cannot be e-filed. It has to be filed by mail. You cannot mail it until you can print it. E-filing for 2018 has been permanently closed since October 15, 2019. Sorry.
https://turbotax.intuit.com/stimulus-check/
https://ttlc.intuit.com/community/tax-topics/help/how-will-the-stimulus-package-impact-me/00/1393859
If you have income to report on a 2019 return, a 2019 return can be e-filed. The online software is ONLY for 2019 returns.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
