Stimulus Payment — RRB

My wife and I receive RRB in lieu of Social Security and have yet to receive our stimulus checks. Have you heard of any holdup for those who are on RRB? I have not filed my 2019 Income Tax yet. My 2018 return did not have any direct deposit information because we did not receive a refund. I went to the IRS My Payment site and it took me to a page that asked me about my 2019 or 2018 return and also asked for direct deposit info. It was my understanding that if you received your RRB benefits via direct deposit that information is what the IRS would use to send your stimulus payment. Should I be filling out the info on the IRS My Payment site or should we just wait for payment from RRB?