Having difficulty entering a carryover for the foreign tax credit. TT says it requires Form 1116, Sch B. But TT says the form is unsupported for E-filing. What do I do?

I called customer support on this issue and was told I won't be able to E-File and will have to complete the paper forms and snail mail my return in!
I can't believe that could be true.
When I looked at TT form availability it appears to say that this Form 1116 Schedule B form is "unsupported" for E-filing.
I am totally flummoxed on how to proceed. Any suggestions?