RMD ENTRY PAGE (GETTING MONTHLY PAYMENTS FROM OPM)

On the RMD number entry page, it asks for Rmd due by Dec 31, 2024.  I'm a federal retiree and the RMD is fullfilled by  my monthly payments.  I entered my gross amount income and it came back with something that made even less sense.  I finally entered 0 and it seemed to take that and asked more questions about whether I get regular payments.  I have no clue whether this is the right thing to do as all indications elsewhere tell me to always answer that all payments qualify as RMD. 

Everyone asking about this on the internet believes this is  a bug in the program. Either way, it won't let me finish until I put somethiing in there.  There is not even one clue from turbotax on how to answer this  question and I have now spent 4 hours trying to figure it out.