Try using one of the companies that the IRS recommends for free tax preparation online. They are already set up to work with people on disability benefits / SSA / RRA / SSI - etc.. we ended up using online taxes .com and it worked like a charm! No more trying to figure out how to use a system that is not set up for it in the first place.
Online taxes also filed our federal information for the stimulus check. You have until midnight 5.4.20
Hope that helps, good luck.
