This was a less than stelar solution, but it sort of worked.
It turns out any pop-up window was opening up blank. I was able to struggle through purchasing and sending my e-file, but I had to change my scaling and/or resolution for every entry on each pop-up screen!
I'd have to fill in an entry without the characters displaying, change my settings to reveal my entry and what the response was, and repeat ad nauseum. It didn't even seem to matter what setting I picked, as long as scale was 150% or less it would work, but I still had to change it for each entry.
